Add support for SQLite as a database

.gitignore

@@ -35,3 +35,4 @@ app/views/pages/data_privacy.html.haml
 
 /app/assets/builds/*
 !/app/assets/builds/.keep
+db/development.sqlite3

Gemfile

@@ -21,6 +21,7 @@ gem "puma", "~> 6.0"
 gem "rails", "~> 7.0.3", ">= 7.0.3.1"
 gem "rqrcode"
 gem "simple_form"
+gem "sqlite3"
 gem "stimulus-rails"
 gem "tailwindcss-rails"
 gem "turbo-rails"

Gemfile.lock

@@ -272,6 +272,7 @@ GEM
     simple_form (5.1.0)
       actionpack (>= 5.2)
       activemodel (>= 5.2)
+    sqlite3 (1.5.3-x86_64-linux)
     standard (1.16.1)
       rubocop (= 1.35.1)
       rubocop-performance (= 1.14.3)
@@ -338,6 +339,7 @@ DEPENDENCIES
   rspec-rails
   selenium-webdriver
   simple_form
+  sqlite3
   standard
   stimulus-rails
   tailwindcss-rails

README.md

@@ -13,10 +13,18 @@ A home for all your coupons and loyalty cards. Free to use at https://coupon.met
 
 ## Setup
 
+Using a PostgreSQL database:
+
 ```shell
 docker-compose -f docker-compose.example.yml up
 ```
 
+Using a SQLite database:
+
+```shell
+docker-compose -f docker-compose.sqlite.yml up
+```
+
 ### Instance specific configuration
 
 Add a page for data privacy by creating a file at `app/views/pages/data_privacy.html.haml`.
@@ -31,6 +39,13 @@ bin/dev
 ## Environment variables
 
 - `DEVISE_SENDER_EMAIL`: the email address you are sending emails from
+- `DATABASE_URL`: allows to set the database. PostgreSQL or SQLite3 are supported.
+
+    Example for SQLite3:
+
+    ```
+    DATABASE_URL=sqlite3:db/development.sqlite3
+    ```
 
 ## License
 

docker-compose.sqlite.yml

@@ -0,0 +1,15 @@
+version: '3.9'
+services:
+  web:
+    image: metikular/coupon-store
+    command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 80 -b '0.0.0.0'"
+    environment:
+      - DATABASE_URL=sqlite3:db/data/coupons.sqlite3
+      - SECRET_KEY_BASE=change-me
+    hostname: web
+    restart: unless-stopped
+    volumes:
+      - coupon-store-database:/app/db/data
+
+volumes:
+  coupon-store-database: