configuration docker-compose rails and mariadb

configuration docker-compose rails and mariadb

#set the enviroment variable and create a .env file
cat .env
  DATABASE_PASSWORD=$DATABASE_PASSWORD

cat docker-compose.yml
  version: "3"
  services:
    mariadb:
      image: mariadb:latest
      restart: always
      container_name: 'mariadb'
      ports:
        - 3306:3306
      volumes:
        - /storage/mariadb:/var/lib/mysql
      environment:
        - MYSQL_ROOT_PASSWORD=${DATABASE_PASSWORD}


    rails:
      build: .
      image: oliveiraandre/rails
      restart: always
      command: rails s -e production
      container_name: 'rails'
      volumes:
        - .:/app
      ports:
        - 3000:3000
      links:
        - "mariadb:mariadb"