environment:
        - MYSQL_DATABASE=my_db
        - MYSQL_USER=my_user
        - MYSQL_PASSWORD=my_pass

adminer:
    image: adminer:4.6.2
    ports:
        - 8080:8080
    links:
        - db:db

db:
    image: mysql:5.7
    volumes:
        - /var/lib/boot2docker/mysql:/var/lib/mysql
    ports:
        - "3306:3306"
    environment:
        - MYSQL_DATABASE=abc
        - MYSQL_USER=abc
        - MYSQL_PASSWORD=abc