docker-compose.yml

version: '3.1'
services: 
    cache:
        build: 
            context: ./redis_db
        image: jeshocarmel/mysimpleapp_cache

        networks:
            - cache-tier
        volumes: 
            - cache_data:/dump.rdb
        tty: true
        container_name: mysimpleapp_cache

    db:
        build: 
            context: ./mysql_db
        image: jeshocarmel/mysimpleapp_db
        volumes: 
            - db_data:/var/lib/mysql
        networks: 
            - back-tier
        environment: 
            TZ: Asia/Singapore
            MYSQL_ROOT_PASSWORD_FILE: /run/secrets/mysql_password
            MYSQL_DATABASE: simple_db
        command: 
            --explicit_defaults_for_timestamp
            --default-authentication-plugin=mysql_native_password
        secrets:
            - mysql_password
        tty: true
        container_name: mysimpleapp_db

    app:
        build: 
            context: ./app
        image: jeshocarmel/mysimpleapp_app
        environment: 
            WAIT_HOSTS: db:3306
            MYSQL_DATABASE: simple_db
        depends_on: 
           - cache
           - db
        networks:
            - back-tier
            - cache-tier
        ports: 
            - "80:80"
        tty: true
        container_name: mysimpleapp_app
        secrets:
            - mysql_password
            - redis_password
volumes:
    cache_data:
    db_data:

networks: 
    cache-tier:
    back-tier:

secrets:
    mysql_password:
        file: ./devsecrets/mysql_password
    redis_password:
        file: ./devsecrets/redis_password