docker script added: Install docker and configure proxy if your behind proxy

Author: nullbyte91

Diff for: docker.sh

@@ -0,0 +1,93 @@
+#!/bin/bash
+
+# Copyright (c) 2018 Jegathesan Shanmugam
+# Released under the MIT License (MIT)
+# https://github.com/nullbyte91/Simple-Sh-DataScience/blob/master/LICENSE.md
+
+# Title           : docker.sh
+# Description     : This script help you to install docker on ubuntu 16.04
+# author		  : Jegathesan Shanmugam
+
+docker="docker"
+dockerengine="docker-engine"
+dockerio="docker.io"
+aptTransportHttps="apt-transport-https"
+caCertificates="ca-certificates"
+curl="curl"
+softwarePropertiesCommon="software-properties-common"
+dockerCe="docker-ce"
+
+fDocker="/etc/default/docker"
+dDocker="/etc/systemd/system/docker.service.d/"
+fhtt="http-proxy.conf"
+#MainStartsHere
+source ./helper_function.sh
+
+# Remove old version
+removeAptPackages ${docker}
+removeAptPackages ${dockerengine}
+removeAptPackages ${dockerio}
+
+#Basic system update
+systemBasicUpdates
+
+#Install basic dep
+installAptPackages ${aptTransportHttps}
+installAptPackages ${caCertificates}
+installAptPackages ${curl}
+installAptPackages ${softwarePropertiesCommon}
+
+#Add Docker official GPG Key
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
+
+#Check Key fingerPrint
+sudo apt-key fingerprint 0EBFCD88
+
+#Setup stable repo of docker
+sudo add-apt-repository \
+   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
+   $(lsb_release -cs) \
+   stable"
+
+#Basic system update
+systemBasicUpdates
+
+#Install docker 
+installAptPackages ${dockerCe}
+
+read -r -p "Are you behind corporate proxy[Y/n]" response
+if [[ "$response" =~ ^([yY][eE][sS]|[yY])+$ ]]
+then
+    if [ ! -f ${fDocker} ]; then
+        echo "File not found. Creating it"
+    fi
+    echo "Creating a /etc/default/docker file"
+    sudo touch /etc/default/docker
+    read -r -p "DNS Address?" DNSAddress
+    echo "DOCKER_OPTS="- - dns ${DNSAddress}"" | sudo tee --append /etc/default/docker
+
+    echo "Creating a service file for docker"
+    sudo mkdir -p ${dDocker}
+    sudo touch ${dDocker}/${fhtt}
+
+    read -r -p "Proxy Address?" ProxyAddress
+    echo "[Service]
+    Environment="HTTP_PROXY=${ProxyAddress}"
+    Environment="HTTPS_PROXY=${ProxyAddress}"
+    " | sudo tee --append ${dDocker}/${fhtt}
+fi
+
+#Verify that Docker CE is installed correctly by running the hello-world image
+sudo docker run hello-world
+
+read -r -p "Add your user to the docker group[Y/n]" response
+if [[ "$response" =~ ^([yY][eE][sS]|[yY])+$ ]]
+then
+    sudo usermod -aG docker $USER
+fi
+
+echo "checking docker without sudo"
+echo "running docker run hello-world"
+docker run hello-world
+
+echo "Docker install and configuration is done............"