diff --git a/Dockerfile b/Dockerfile
new file mode 100755
index 0000000..d59a1aa
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,22 @@
+FROM php:5.6-apache
+
+RUN apt-get update \
+    && apt-get install -y git curl bzip2 vim libssl-dev zlib1g-dev libxrender1 libicu-dev g++ libjpeg-dev libjpeg62 libfontconfig-dev \
+    && pecl install xdebug \
+    && echo zend_extension=xdebug.so > /usr/local/etc/php/conf.d/xdebug.ini \
+    && pecl install apcu-beta \
+    && echo extension=apcu.so > /usr/local/etc/php/conf.d/apcu.ini \
+    && docker-php-ext-install zip mbstring intl pdo_mysql \
+    && apt-get -y install mysql-client php5-gd
+
+ADD docker/vhost.conf /etc/apache2/sites-enabled/000-default.conf
+ADD docker/php.ini /usr/local/etc/php/php.ini
+
+RUN a2enmod rewrite
+
+RUN curl -sS https://getcomposer.org/installer | php \
+    && mv composer.phar /usr/bin/composer
+
+EXPOSE 9000
+
+WORKDIR /var/www/city-bike
diff --git a/behat.yml.dist b/behat.yml.dist
new file mode 100644
index 0000000..f8a965c
--- /dev/null
+++ b/behat.yml.dist
@@ -0,0 +1,4 @@
+default:
+  extensions:
+    RMiller\BehatSpec\BehatExtension:
+      path:  bin/phpspec
diff --git a/composer.json b/composer.json
new file mode 100755
index 0000000..976c397
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,18 @@
+{
+    "require": {
+        "php": ">=5.6"
+    },
+    "autoload": {
+        "psr-4": {
+            "": "src/"
+        }
+    },
+    "require-dev": {
+        "behat/behat": "~3.0",
+        "phpspec/phpspec": "~2.2",
+        "rmiller/behat-spec": "~0.2"
+    },
+    "config": {
+        "bin-dir": "bin"
+    }
+}
diff --git a/composer.lock b/composer.lock
new file mode 100755
index 0000000..1a093dc
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,1512 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "This file is @generated automatically"
+    ],
+    "hash": "fd4a3f1e35583dd19b93a9f3aaf1134b",
+    "packages": [],
+    "packages-dev": [
+        {
+            "name": "behat/behat",
+            "version": "v3.0.15",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Behat/Behat.git",
+                "reference": "b35ae3d45332d80c532af69cc36f780a9397a996"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Behat/Behat/zipball/b35ae3d45332d80c532af69cc36f780a9397a996",
+                "reference": "b35ae3d45332d80c532af69cc36f780a9397a996",
+                "shasum": ""
+            },
+            "require": {
+                "behat/gherkin": "~4.3",
+                "behat/transliterator": "~1.0",
+                "ext-mbstring": "*",
+                "php": ">=5.3.3",
+                "symfony/class-loader": "~2.1",
+                "symfony/config": "~2.3",
+                "symfony/console": "~2.1",
+                "symfony/dependency-injection": "~2.1",
+                "symfony/event-dispatcher": "~2.1",
+                "symfony/translation": "~2.3",
+                "symfony/yaml": "~2.1"
+            },
+            "require-dev": {
+                "phpspec/prophecy-phpunit": "~1.0",
+                "phpunit/phpunit": "~4.0",
+                "symfony/process": "~2.1"
+            },
+            "suggest": {
+                "behat/mink-extension": "for integration with Mink testing framework",
+                "behat/symfony2-extension": "for integration with Symfony2 web framework",
+                "behat/yii-extension": "for integration with Yii web framework"
+            },
+            "bin": [
+                "bin/behat"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Behat\\Behat": "src/",
+                    "Behat\\Testwork": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Konstantin Kudryashov",
+                    "email": "ever.zet@gmail.com",
+                    "homepage": "http://everzet.com"
+                }
+            ],
+            "description": "Scenario-oriented BDD framework for PHP 5.3",
+            "homepage": "http://behat.org/",
+            "keywords": [
+                "Agile",
+                "BDD",
+                "ScenarioBDD",
+                "Scrum",
+                "StoryBDD",
+                "User story",
+                "business",
+                "development",
+                "documentation",
+                "examples",
+                "symfony",
+                "testing"
+            ],
+            "time": "2015-02-22 14:10:33"
+        },
+        {
+            "name": "behat/gherkin",
+            "version": "v4.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Behat/Gherkin.git",
+                "reference": "43777c51058b77bcd84a8775b7a6ad05e986b5db"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Behat/Gherkin/zipball/43777c51058b77bcd84a8775b7a6ad05e986b5db",
+                "reference": "43777c51058b77bcd84a8775b7a6ad05e986b5db",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.1"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0",
+                "symfony/yaml": "~2.1"
+            },
+            "suggest": {
+                "symfony/yaml": "If you want to parse features, represented in YAML files"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.2-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Behat\\Gherkin": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Konstantin Kudryashov",
+                    "email": "ever.zet@gmail.com",
+                    "homepage": "http://everzet.com"
+                }
+            ],
+            "description": "Gherkin DSL parser for PHP 5.3",
+            "homepage": "http://behat.org/",
+            "keywords": [
+                "BDD",
+                "Behat",
+                "Cucumber",
+                "DSL",
+                "gherkin",
+                "parser"
+            ],
+            "time": "2014-06-06 01:24:32"
+        },
+        {
+            "name": "behat/transliterator",
+            "version": "v1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Behat/Transliterator.git",
+                "reference": "c93521d3462a554332d1ef5bb0e9b5b8ca4106c4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Behat/Transliterator/zipball/c93521d3462a554332d1ef5bb0e9b5b8ca4106c4",
+                "reference": "c93521d3462a554332d1ef5bb0e9b5b8ca4106c4",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Behat\\Transliterator": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Artistic-1.0"
+            ],
+            "description": "String transliterator",
+            "keywords": [
+                "i18n",
+                "slug",
+                "transliterator"
+            ],
+            "time": "2014-05-15 22:08:22"
+        },
+        {
+            "name": "doctrine/instantiator",
+            "version": "1.0.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/instantiator.git",
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3,<8.0-DEV"
+            },
+            "require-dev": {
+                "athletic/athletic": "~0.1.8",
+                "ext-pdo": "*",
+                "ext-phar": "*",
+                "phpunit/phpunit": "~4.0",
+                "squizlabs/php_codesniffer": "~2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Marco Pivetta",
+                    "email": "ocramius@gmail.com",
+                    "homepage": "http://ocramius.github.com/"
+                }
+            ],
+            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
+            "homepage": "https://github.com/doctrine/instantiator",
+            "keywords": [
+                "constructor",
+                "instantiate"
+            ],
+            "time": "2015-06-14 21:17:01"
+        },
+        {
+            "name": "phpdocumentor/reflection-docblock",
+            "version": "2.0.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
+                "reference": "d68dbdc53dc358a816f00b300704702b2eaff7b8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/d68dbdc53dc358a816f00b300704702b2eaff7b8",
+                "reference": "d68dbdc53dc358a816f00b300704702b2eaff7b8",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
+            },
+            "suggest": {
+                "dflydev/markdown": "~1.0",
+                "erusev/parsedown": "~1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "phpDocumentor": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mike van Riel",
+                    "email": "mike.vanriel@naenius.com"
+                }
+            ],
+            "time": "2015-02-03 12:10:50"
+        },
+        {
+            "name": "phpspec/php-diff",
+            "version": "v1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpspec/php-diff.git",
+                "reference": "30e103d19519fe678ae64a60d77884ef3d71b28a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpspec/php-diff/zipball/30e103d19519fe678ae64a60d77884ef3d71b28a",
+                "reference": "30e103d19519fe678ae64a60d77884ef3d71b28a",
+                "shasum": ""
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Diff": "lib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Chris Boulton",
+                    "homepage": "http://github.com/chrisboulton",
+                    "role": "Original developer"
+                }
+            ],
+            "description": "A comprehensive library for generating differences between two hashable objects (strings or arrays).",
+            "time": "2013-11-01 13:02:21"
+        },
+        {
+            "name": "phpspec/phpspec",
+            "version": "2.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpspec/phpspec.git",
+                "reference": "e9a40577323e67f1de2e214abf32976a0352d8f8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpspec/phpspec/zipball/e9a40577323e67f1de2e214abf32976a0352d8f8",
+                "reference": "e9a40577323e67f1de2e214abf32976a0352d8f8",
+                "shasum": ""
+            },
+            "require": {
+                "doctrine/instantiator": "^1.0.1",
+                "php": ">=5.3.3",
+                "phpspec/php-diff": "~1.0.0",
+                "phpspec/prophecy": "~1.4",
+                "sebastian/exporter": "~1.0",
+                "symfony/console": "~2.3",
+                "symfony/event-dispatcher": "~2.1",
+                "symfony/finder": "~2.1",
+                "symfony/process": "~2.1",
+                "symfony/yaml": "~2.1"
+            },
+            "require-dev": {
+                "behat/behat": "^3.0.11",
+                "bossa/phpspec2-expect": "~1.0",
+                "phpunit/phpunit": "~4.4",
+                "symfony/filesystem": "~2.1",
+                "symfony/process": "~2.1"
+            },
+            "suggest": {
+                "phpspec/nyan-formatters": "~1.0 – Adds Nyan formatters"
+            },
+            "bin": [
+                "bin/phpspec"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.2.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "PhpSpec": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Konstantin Kudryashov",
+                    "email": "ever.zet@gmail.com",
+                    "homepage": "http://everzet.com"
+                },
+                {
+                    "name": "Marcello Duarte",
+                    "homepage": "http://marcelloduarte.net/"
+                }
+            ],
+            "description": "Specification-oriented BDD framework for PHP 5.3+",
+            "homepage": "http://phpspec.net/",
+            "keywords": [
+                "BDD",
+                "SpecBDD",
+                "TDD",
+                "spec",
+                "specification",
+                "testing",
+                "tests"
+            ],
+            "time": "2015-05-30 15:21:40"
+        },
+        {
+            "name": "phpspec/prophecy",
+            "version": "v1.4.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpspec/prophecy.git",
+                "reference": "3132b1f44c7bf2ec4c7eb2d3cb78fdeca760d373"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/3132b1f44c7bf2ec4c7eb2d3cb78fdeca760d373",
+                "reference": "3132b1f44c7bf2ec4c7eb2d3cb78fdeca760d373",
+                "shasum": ""
+            },
+            "require": {
+                "doctrine/instantiator": "^1.0.2",
+                "phpdocumentor/reflection-docblock": "~2.0",
+                "sebastian/comparator": "~1.1"
+            },
+            "require-dev": {
+                "phpspec/phpspec": "~2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.4.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Prophecy\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Konstantin Kudryashov",
+                    "email": "ever.zet@gmail.com",
+                    "homepage": "http://everzet.com"
+                },
+                {
+                    "name": "Marcello Duarte",
+                    "email": "marcello.duarte@gmail.com"
+                }
+            ],
+            "description": "Highly opinionated mocking framework for PHP 5.3+",
+            "homepage": "https://github.com/phpspec/prophecy",
+            "keywords": [
+                "Double",
+                "Dummy",
+                "fake",
+                "mock",
+                "spy",
+                "stub"
+            ],
+            "time": "2015-04-27 22:15:08"
+        },
+        {
+            "name": "rmiller/behat-spec",
+            "version": "0.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/richardmiller/BehatSpec.git",
+                "reference": "9f36516185707d0bea384ff4285f5c36a6650442"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/richardmiller/BehatSpec/zipball/9f36516185707d0bea384ff4285f5c36a6650442",
+                "reference": "9f36516185707d0bea384ff4285f5c36a6650442",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.4",
+                "rmiller/error-extension": "~0.1",
+                "rmiller/exemplify-extension": "~0.2",
+                "rmiller/phpspec-extension": "~0.1",
+                "rmiller/phpspec-run-extension": "~0.1"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "RMiller\\BehatSpec\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Richard Miller",
+                    "email": "mrrmiller46@gmail.com",
+                    "homepage": "http://richardmiller.co.uk"
+                }
+            ],
+            "description": "Behat and PhpSpec integration",
+            "homepage": "https://github.com/richardmiller/BehatSpec",
+            "keywords": [
+                "BDD",
+                "SpecBDD",
+                "StoryBDD"
+            ],
+            "time": "2014-11-12 14:09:59"
+        },
+        {
+            "name": "rmiller/caser",
+            "version": "0.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/richardmiller/caser.git",
+                "reference": "ec7b0d9b5db806f5e6bcee48d6cce58efb20e834"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/richardmiller/caser/zipball/ec7b0d9b5db806f5e6bcee48d6cce58efb20e834",
+                "reference": "ec7b0d9b5db806f5e6bcee48d6cce58efb20e834",
+                "shasum": ""
+            },
+            "require-dev": {
+                "phpspec/phpspec": "~2.1@dev"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "RMiller\\Caser\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Richard Miller",
+                    "email": "mrrmiller46@gmail.com"
+                }
+            ],
+            "description": "Manipulates case",
+            "homepage": "https://github.com/richardmiller/caser",
+            "time": "2014-11-02 22:15:20"
+        },
+        {
+            "name": "rmiller/error-extension",
+            "version": "0.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/richardmiller/ErrorExtension.git",
+                "reference": "26d27c7c67f99fd9d56f56147f85cbc991ca4834"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/richardmiller/ErrorExtension/zipball/26d27c7c67f99fd9d56f56147f85cbc991ca4834",
+                "reference": "26d27c7c67f99fd9d56f56147f85cbc991ca4834",
+                "shasum": ""
+            },
+            "require": {
+                "behat/behat": "~3.0,>=3.0.4",
+                "php": ">=5.4"
+            },
+            "require-dev": {
+                "phpspec/phpspec": "~2.1@dev"
+            },
+            "type": "behat-extension",
+            "autoload": {
+                "psr-4": {
+                    "RMiller\\ErrorExtension\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Richard Miller",
+                    "email": "mrrmiller46@gmail.com"
+                }
+            ],
+            "description": "Fatal error handling extension for Behat",
+            "homepage": "https://github.com/richardmiller/ErrorExtension",
+            "keywords": [
+                "BDD",
+                "Behat"
+            ],
+            "time": "2014-11-04 10:15:46"
+        },
+        {
+            "name": "rmiller/exemplify-extension",
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+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Filesystem\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Filesystem Component",
+            "homepage": "https://symfony.com",
+            "time": "2015-06-08 09:37:21"
+        },
+        {
+            "name": "symfony/finder",
+            "version": "v2.7.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/Finder.git",
+                "reference": "c13a40d638aeede1e8400f8c956c7f9246c05f75"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/Finder/zipball/c13a40d638aeede1e8400f8c956c7f9246c05f75",
+                "reference": "c13a40d638aeede1e8400f8c956c7f9246c05f75",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.9"
+            },
+            "require-dev": {
+                "symfony/phpunit-bridge": "~2.7"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.7-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Finder\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Finder Component",
+            "homepage": "https://symfony.com",
+            "time": "2015-06-04 20:11:48"
+        },
+        {
+            "name": "symfony/process",
+            "version": "v2.7.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/Process.git",
+                "reference": "552d8efdc80980cbcca50b28d626ac8e36e3cdd1"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/Process/zipball/552d8efdc80980cbcca50b28d626ac8e36e3cdd1",
+                "reference": "552d8efdc80980cbcca50b28d626ac8e36e3cdd1",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.9"
+            },
+            "require-dev": {
+                "symfony/phpunit-bridge": "~2.7"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.7-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Process\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Process Component",
+            "homepage": "https://symfony.com",
+            "time": "2015-06-08 09:37:21"
+        },
+        {
+            "name": "symfony/translation",
+            "version": "v2.7.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/Translation.git",
+                "reference": "8349a2b0d11bd0311df9e8914408080912983a0b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/Translation/zipball/8349a2b0d11bd0311df9e8914408080912983a0b",
+                "reference": "8349a2b0d11bd0311df9e8914408080912983a0b",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.9"
+            },
+            "conflict": {
+                "symfony/config": "<2.7"
+            },
+            "require-dev": {
+                "psr/log": "~1.0",
+                "symfony/config": "~2.7",
+                "symfony/intl": "~2.3",
+                "symfony/phpunit-bridge": "~2.7",
+                "symfony/yaml": "~2.2"
+            },
+            "suggest": {
+                "psr/log": "To use logging capability in translator",
+                "symfony/config": "",
+                "symfony/yaml": ""
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.7-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Translation\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Translation Component",
+            "homepage": "https://symfony.com",
+            "time": "2015-06-11 17:26:34"
+        },
+        {
+            "name": "symfony/yaml",
+            "version": "v2.7.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/Yaml.git",
+                "reference": "9808e75c609a14f6db02f70fccf4ca4aab53c160"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/Yaml/zipball/9808e75c609a14f6db02f70fccf4ca4aab53c160",
+                "reference": "9808e75c609a14f6db02f70fccf4ca4aab53c160",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.9"
+            },
+            "require-dev": {
+                "symfony/phpunit-bridge": "~2.7"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.7-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Yaml\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Yaml Component",
+            "homepage": "https://symfony.com",
+            "time": "2015-06-10 15:30:22"
+        }
+    ],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": {
+        "php": ">=5.6"
+    },
+    "platform-dev": []
+}
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100755
index 0000000..955edc0
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,6 @@
+web:
+  build: .
+  volumes:
+    - .:/var/www/city-bike
+  ports:
+    - "80:80"
diff --git a/docker/php.ini b/docker/php.ini
new file mode 100755
index 0000000..24b17fd
--- /dev/null
+++ b/docker/php.ini
@@ -0,0 +1,4 @@
+date.timezone = Europe/Warsaw
+short_open_tag = off
+
+error_reporting = E_ALL
diff --git a/docker/vhost.conf b/docker/vhost.conf
new file mode 100755
index 0000000..56eace2
--- /dev/null
+++ b/docker/vhost.conf
@@ -0,0 +1,15 @@
+<VirtualHost *:80>
+    ServerName city-bike.dev
+    ServerAlias www.city-bike.dev
+
+    DocumentRoot /var/www/city-bike/web
+    <Directory /var/www/city-bike/web>
+        # enable the .htaccess rewrites
+        AllowOverride All
+        Order allow,deny
+        Allow from All
+    </Directory>
+
+    ErrorLog /var/log/apache2/project_error.log
+    CustomLog /var/log/apache2/project_access.log combined
+</VirtualHost>
diff --git a/features/bootstrap/FeatureContext.php b/features/bootstrap/FeatureContext.php
new file mode 100755
index 0000000..6f4428d
--- /dev/null
+++ b/features/bootstrap/FeatureContext.php
@@ -0,0 +1,89 @@
+<?php
+
+use Behat\Behat\Tester\Exception\PendingException;
+use Behat\Behat\Context\Context;
+use Behat\Behat\Context\SnippetAcceptingContext;
+use Behat\Gherkin\Node\PyStringNode;
+use Behat\Gherkin\Node\TableNode;
+use Cocoders\CityBike\FoundDockingStation;
+use Cocoders\CityBike\Position;
+
+/**
+ * Defines application features from the specific context.
+ */
+class FeatureContext implements Context, SnippetAcceptingContext
+{
+    private $dockingStations;
+    private $foundDockingStations;
+    /**
+     * @var FoundDockingStation[]
+     */
+    private $nearestDockingStations = [];
+
+    /**
+     * Initializes context.
+     *
+     * Every scenario gets its own context instance.
+     * You can also pass arbitrary arguments to the
+     * context constructor through behat.yml.
+     */
+    public function __construct()
+    {
+        $this->dockingStations = new \Cocoders\InMemory\CityBike\DockingStations();
+        $this->foundDockingStations = new \Cocoders\InMemory\CityBike\FoundDockingStations();
+    }
+
+    /**
+     * @Given there are such docking stations:
+     */
+    public function thereAreSuchDockingStations(TableNode $table)
+    {
+        foreach ($table->getHash() as $row) {
+            $dockingStation = new \Cocoders\CityBike\DockingStation(
+                $row['name'],
+                new Position(
+                    $row['lat'],
+                    $row['long']
+                )
+            );
+            $dockingStation->setAvailableBikes($row['available bikes']);
+            $this->dockingStations->add($dockingStation);
+        }
+    }
+
+    /**
+     * @When I am searching nearest bike docking stations from my posisiton which is :positionString
+     */
+    public function iAmSearchingNearestBikeDockingStationsFromMyPosisitonWhichIs($positionString)
+    {
+        $dockingStations = $this->dockingStations->findAll();
+        $this->nearestDockingStations = $this
+            ->foundDockingStations
+            ->search(Position::fromString($positionString), $dockingStations)
+        ;
+    }
+
+    /**
+     * @Then I should see such nearest docking stations:
+     */
+    public function iShouldSeeSuchNearestDockingStations(TableNode $table)
+    {
+        foreach ($this->nearestDockingStations as $key => $foundDockingStation) {
+            if ($foundDockingStation->distance != $table->getHash()[$key]['distance (km)']) {
+                throw new \Exception('Distance does not match');
+            }
+            if ($foundDockingStation->availableBikes != $table->getHash()[$key]['available bikes']) {
+                throw new \Exception('Available does not match');
+            }
+            if ($foundDockingStation->lat != $table->getHash()[$key]['lat']) {
+                throw new \Exception('lat does not match');
+            }
+            if ($foundDockingStation->long != $table->getHash()[$key]['long']) {
+                throw new \Exception('long does not match');
+            }
+            if ($foundDockingStation->name != $table->getHash()[$key]['name']) {
+                throw new \Exception('name does not match');
+            }
+        }
+    }
+}
diff --git a/features/searchNearestDockingStation.feature b/features/searchNearestDockingStation.feature
new file mode 100644
index 0000000..b759ead
--- /dev/null
+++ b/features/searchNearestDockingStation.feature
@@ -0,0 +1,22 @@
+Feature: As a public transport user
+  I want to find nearest bike docking station easily
+  so I can use app which search nearest stations from my location
+
+  Background:
+    Given there are such docking stations:
+      | name                     | lat        | long       | available bikes |
+      | Toruń Rynek Staromiejski | 53.010418  | 18.6037566 |              5  |
+      | Toruń Św Katarzyny       | 53.0132672 | 18.613699  |              2  |
+      | Toruń Plac Rapackiego    | 53.0099343 | 18.6010726 |              0  |
+
+  Scenario: Searching next docking station
+    When I am searching nearest bike docking stations from my posisiton which is "53.03531,18.598338"
+    Then I should see such nearest docking stations:
+      | name                     | lat        | long       | available bikes | distance (km) |
+      | Toruń Św Katarzyny       | 53.0132672 | 18.613699  |               2 |          2.66 |
+      | Toruń Rynek Staromiejski | 53.010418  | 18.6037566 |               5 |          2.79 |
+      | Toruń Plac Rapackiego    | 53.0099343 | 18.6010726 |               0 |          2.83 |
+
+    # 2.9km
+    # 3.0km
+    # 3.2km
diff --git a/phpspec.yml.dist b/phpspec.yml.dist
new file mode 100644
index 0000000..1e7144e
--- /dev/null
+++ b/phpspec.yml.dist
@@ -0,0 +1,2 @@
+extensions:
+ - RMiller\BehatSpec\PhpSpecExtension
diff --git a/spec/Cocoders/CityBike/DockingStationSpec.php b/spec/Cocoders/CityBike/DockingStationSpec.php
new file mode 100755
index 0000000..fcaebdf
--- /dev/null
+++ b/spec/Cocoders/CityBike/DockingStationSpec.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace spec\Cocoders\CityBike;
+
+use PhpSpec\ObjectBehavior;
+use Prophecy\Argument;
+
+class DockingStationSpec extends ObjectBehavior
+{
+    function let()
+    {
+        $this->beConstructedWith(
+            'Toruń Rynek Staromiejski',
+            new \Cocoders\CityBike\Position(
+                '53.010418',
+                '18.6037566'
+            )
+        );
+    }
+
+    function it_is_initializable()
+    {
+        $this->shouldHaveType('Cocoders\CityBike\DockingStation');
+    }
+
+    function it_allows_to_get_name()
+    {
+        $this->getName()->shouldBe('Toruń Rynek Staromiejski');
+    }
+
+    function it_allows_to_get_position()
+    {
+        $this->getPosition()->shouldBeLike(
+            new \Cocoders\CityBike\Position(
+                '53.010418',
+                '18.6037566'
+            )
+        );
+    }
+
+    function it_allows_set_available_bikes()
+    {
+        $this->setAvailableBikes(5);
+
+        $this->getAvailableBikes()->shouldBe(5);
+    }
+
+    function it_should_have_0_available_bikes_by_default()
+    {
+        $this->getAvailableBikes()->shouldBe(0);
+    }
+}
diff --git a/spec/Cocoders/CityBike/FoundDockingStationSpec.php b/spec/Cocoders/CityBike/FoundDockingStationSpec.php
new file mode 100755
index 0000000..dec0b1b
--- /dev/null
+++ b/spec/Cocoders/CityBike/FoundDockingStationSpec.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace spec\Cocoders\CityBike;
+
+use Cocoders\CityBike\DockingStation;
+use Cocoders\CityBike\Position;
+use PhpSpec\ObjectBehavior;
+use Prophecy\Argument;
+
+class FoundDockingStationSpec extends ObjectBehavior
+{
+    function it_is_initializable()
+    {
+        $this->shouldHaveType('Cocoders\CityBike\FoundDockingStation');
+    }
+
+    function it_can_be_created_from_docking_station_object_and_distance(
+        DockingStation $dockingStation
+    )
+    {
+        $dockingStation->getName()->willReturn('My docking station');
+        $dockingStation->getPosition()->willReturn(
+            new \Cocoders\CityBike\Position(
+                '53.010418',
+                '18.6037566'
+            )
+        );
+        $dockingStation->getAvailableBikes()->willReturn(5);
+
+        $this->beConstructedThrough('fromDockingStationAndDistance', [$dockingStation, 3]);
+
+        $this->name->shouldBe('My docking station');
+        $this->lat->shouldBe('53.010418');
+        $this->long->shouldBe('18.6037566');
+        $this->availableBikes->shouldBe(5);
+        $this->distance->shouldBe(3);
+    }
+}
diff --git a/spec/Cocoders/CityBike/PositionSpec.php b/spec/Cocoders/CityBike/PositionSpec.php
new file mode 100755
index 0000000..672f8c3
--- /dev/null
+++ b/spec/Cocoders/CityBike/PositionSpec.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace spec\Cocoders\CityBike;
+
+use Cocoders\CityBike\Position;
+use PhpSpec\ObjectBehavior;
+use Prophecy\Argument;
+
+class PositionSpec extends ObjectBehavior
+{
+    function let()
+    {
+        $this->beConstructedWith(
+            '53.010418',
+            '18.6037566'
+        );
+    }
+
+    function it_is_initializable()
+    {
+        $this->shouldHaveType('Cocoders\CityBike\Position');
+    }
+
+    function it_allows_to_get_lat()
+    {
+        $this->getLat()->shouldBe('53.010418');
+    }
+
+    function it_allows_to_get_long()
+    {
+        $this->getLong()->shouldBe('18.6037566');
+    }
+
+    function it_calculate_distance_between_two_posistion()
+    {
+        $this
+            ->calculateDistance(
+                new Position(53.03531, 18.598338)
+            )
+            ->shouldBe(2.79);
+    }
+
+    public function it_creates_position_from_string()
+    {
+        $position = $this->fromString('54.010418,19.6037566');
+        $position->getLat()->shouldBe(54.010418);
+        $position->getLong()->shouldBe(19.6037566);
+
+        $position = $this->fromString('54.010419,   19.6037550');
+        $position->getLat()->shouldBe(54.010419);
+        $position->getLong()->shouldBe(19.6037550);
+    }
+}
diff --git a/spec/Cocoders/InMemory/CityBike/DockingStationsSpec.php b/spec/Cocoders/InMemory/CityBike/DockingStationsSpec.php
new file mode 100755
index 0000000..7a6a8ee
--- /dev/null
+++ b/spec/Cocoders/InMemory/CityBike/DockingStationsSpec.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace spec\Cocoders\InMemory\CityBike;
+
+use Cocoders\CityBike\DockingStation;
+use Cocoders\CityBike\DockingStations;
+use PhpSpec\ObjectBehavior;
+use Prophecy\Argument;
+
+class DockingStationsSpec extends ObjectBehavior
+{
+    function it_is_docker_station_collection()
+    {
+        $this->shouldHaveType('Cocoders\CityBike\DockingStations');
+    }
+
+    function it_allows_to_store_docking_station(
+        DockingStation $dockingStation,
+        DockingStation $dockingStation2
+    ) {
+        $this->add($dockingStation);
+        $this->add($dockingStation2);
+
+        $this->findAll()->shouldBe([
+            $dockingStation,
+            $dockingStation2
+        ]);
+    }
+}
diff --git a/spec/Cocoders/InMemory/CityBike/FoundDockingStationsSpec.php b/spec/Cocoders/InMemory/CityBike/FoundDockingStationsSpec.php
new file mode 100755
index 0000000..5116e28
--- /dev/null
+++ b/spec/Cocoders/InMemory/CityBike/FoundDockingStationsSpec.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace spec\Cocoders\InMemory\CityBike;
+
+use Cocoders\CityBike\DockingStation;
+use Cocoders\CityBike\Position;
+use PhpSpec\ObjectBehavior;
+use Prophecy\Argument;
+
+class FoundDockingStationsSpec extends ObjectBehavior
+{
+    function it_is_initializable()
+    {
+        $this->shouldHaveType('Cocoders\CityBike\FoundDockingStations');
+    }
+
+    function it_returns_found_docking_stations_ordered_by_distance(
+        DockingStation $dockingStation1,
+        DockingStation $dockingStation2,
+        DockingStation $dockingStation3
+    ) {
+        $dockingStation1->getName()->willReturn('station 1');
+        $dockingStation1->getAvailableBikes()->willReturn(1);
+        $dockingStation1->getPosition()->willReturn(
+            new Position(53.010418, 18.6037566)
+        );
+        $dockingStation2->getName()->willReturn('station 2');
+        $dockingStation2->getAvailableBikes()->willReturn(1);
+        $dockingStation2->getPosition()->willReturn(
+            new Position(53.0132672, 18.613699)
+        );
+        $dockingStation3->getName()->willReturn('station 3');
+        $dockingStation3->getAvailableBikes()->willReturn(1);
+        $dockingStation3->getPosition()->willReturn(
+            new Position(53.0099343, 18.6010726)
+        );
+
+        $foundDockingStations = $this->search(
+            new Position(53.03531, 18.598338),
+            [
+                $dockingStation1,
+                $dockingStation2,
+                $dockingStation3
+            ]
+        );
+        $foundDockingStations[0]->name->shouldBe('station 2');
+        $foundDockingStations[0]->distance->shouldBe(2.66);
+        $foundDockingStations[1]->name->shouldBe('station 1');
+        $foundDockingStations[1]->distance->shouldBe(2.79);
+        $foundDockingStations[2]->name->shouldBe('station 3');
+        $foundDockingStations[2]->distance->shouldBe(2.83);
+    }
+}
diff --git a/src/Cocoders/CityBike/DockingStation.php b/src/Cocoders/CityBike/DockingStation.php
new file mode 100755
index 0000000..3496c5f
--- /dev/null
+++ b/src/Cocoders/CityBike/DockingStation.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Cocoders\CityBike;
+
+class DockingStation
+{
+    private $name;
+    private $position;
+    private $availableBikes;
+
+    public function __construct($name, Position $position)
+    {
+        $this->name = $name;
+        $this->position = $position;
+        $this->availableBikes = 0;
+    }
+
+    public function setAvailableBikes($availableBikes)
+    {
+        $this->availableBikes = $availableBikes;
+    }
+
+    public function getAvailableBikes()
+    {
+        return $this->availableBikes;
+    }
+
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function getPosition()
+    {
+        return $this->position;
+    }
+}
diff --git a/src/Cocoders/CityBike/DockingStations.php b/src/Cocoders/CityBike/DockingStations.php
new file mode 100755
index 0000000..95943ae
--- /dev/null
+++ b/src/Cocoders/CityBike/DockingStations.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Cocoders\CityBike;
+
+interface DockingStations
+{
+    /**
+     * @param DockingStation $dockingStation
+     * @return null
+     */
+    public function add(DockingStation $dockingStation);
+
+    /**
+     * @return DockingStation[]
+     */
+    public function findAll();
+}
+
diff --git a/src/Cocoders/CityBike/FoundDockingStation.php b/src/Cocoders/CityBike/FoundDockingStation.php
new file mode 100755
index 0000000..3f17700
--- /dev/null
+++ b/src/Cocoders/CityBike/FoundDockingStation.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Cocoders\CityBike;
+
+class FoundDockingStation
+{
+    public $name;
+    public $long;
+    public $lat;
+    public $availableBikes;
+    public $distance;
+
+    public static function fromDockingStationAndDistance(DockingStation $dockingStation, $distance)
+    {
+        $foundDockingStation = new static();
+        $foundDockingStation->name = $dockingStation->getName();
+        $foundDockingStation->lat = $dockingStation->getPosition()->getLat();
+        $foundDockingStation->long = $dockingStation->getPosition()->getLong();
+        $foundDockingStation->availableBikes = $dockingStation->getAvailableBikes();
+        $foundDockingStation->distance = $distance;
+
+        return $foundDockingStation;
+    }
+}
diff --git a/src/Cocoders/CityBike/FoundDockingStations.php b/src/Cocoders/CityBike/FoundDockingStations.php
new file mode 100755
index 0000000..021ef74
--- /dev/null
+++ b/src/Cocoders/CityBike/FoundDockingStations.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace Cocoders\CityBike;
+
+interface FoundDockingStations
+{
+    /**
+     * @param Position $startPosition
+     * @param DockingStation[] $dockingStations
+     * @return FoundDockingStation[]
+     */
+    public function search(Position $startPosition, $dockingStations);
+}
+
diff --git a/src/Cocoders/CityBike/Position.php b/src/Cocoders/CityBike/Position.php
new file mode 100755
index 0000000..eca239c
--- /dev/null
+++ b/src/Cocoders/CityBike/Position.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace Cocoders\CityBike;
+
+final class Position
+{
+    private $lat;
+    private $long;
+
+    public static function fromString($string)
+    {
+        $string = trim($string);
+
+        $positionArray = sscanf($string, '%f,%f');
+
+        array_unique($positionArray);
+
+        if ($positionArray) {
+            return new static($positionArray[0], $positionArray[1]);
+        }
+
+        throw new \InvalidArgumentException(sprintf('%s is invalid lat,long string', $string));
+    }
+
+    public function __construct($lat, $long)
+    {
+        $this->lat = $lat;
+        $this->long = $long;
+    }
+
+    public function getLat()
+    {
+        return $this->lat;
+    }
+
+    public function getLong()
+    {
+        return $this->long;
+    }
+
+    /**
+     * Returns distance in km between positions
+     *
+     * @param Position $position
+     * @return float
+     */
+    public function calculateDistance(Position $position)
+    {
+        $theta = $this->long - $position->getLong();
+        $distance =
+            (sin(deg2rad($this->lat)) * sin(deg2rad($position->getLat()))) +
+            (cos(deg2rad($this->lat)) * cos(deg2rad($position->getLat())) * cos(deg2rad($theta)));
+        $distance = acos($distance);
+        $distance = rad2deg($distance);
+
+
+        return round(($distance * 60 * 1.1515) * 1.609344, 2);
+    }
+}
diff --git a/src/Cocoders/InMemory/CityBike/DockingStations.php b/src/Cocoders/InMemory/CityBike/DockingStations.php
new file mode 100755
index 0000000..eb34fe6
--- /dev/null
+++ b/src/Cocoders/InMemory/CityBike/DockingStations.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace Cocoders\InMemory\CityBike;
+
+use Cocoders\CityBike\DockingStation;
+use Cocoders\CityBike\DockingStations as DockingStationsInterface;
+
+final class DockingStations implements DockingStationsInterface
+{
+    private $stations = [];
+
+    /**
+     * @param DockingStation $dockingStation
+     * @return null
+     */
+    public function add(DockingStation $dockingStation)
+    {
+        $this->stations[] = $dockingStation;
+    }
+
+    /**
+     * @return DockingStation[]
+     */
+    public function findAll()
+    {
+        return $this->stations;
+    }
+}
diff --git a/src/Cocoders/InMemory/CityBike/FoundDockingStations.php b/src/Cocoders/InMemory/CityBike/FoundDockingStations.php
new file mode 100755
index 0000000..3a47127
--- /dev/null
+++ b/src/Cocoders/InMemory/CityBike/FoundDockingStations.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Cocoders\InMemory\CityBike;
+
+use Cocoders\CityBike\DockingStation;
+use Cocoders\CityBike\FoundDockingStation;
+use Cocoders\CityBike\FoundDockingStations as FoundDockingStationsInterface;
+use Cocoders\CityBike\Position;
+
+final class FoundDockingStations implements FoundDockingStationsInterface
+{
+    /**
+     * @param Position $startPosition
+     * @param DockingStation[] $dockingStations
+     * @return FoundDockingStation[]
+     */
+    public function search(Position $startPosition, $dockingStations)
+    {
+        $foundDockingStations = [];
+        foreach ($dockingStations as $dockingStation) {
+            $foundDockingStations[] = FoundDockingStation::fromDockingStationAndDistance(
+                $dockingStation,
+                $startPosition->calculateDistance($dockingStation->getPosition())
+            );
+        }
+
+        usort($foundDockingStations, function (FoundDockingStation $a, FoundDockingStation $b) {
+            if ($a->distance == $b->distance) {
+                return 0;
+            }
+
+            return $a->distance < $b->distance ? -1 : 1;
+        });
+
+        return $foundDockingStations;
+    }
+}