Docker Compose sample file

docker-compose.yml

version: "3.8"
services:
    database:
        image: mysql:latest
        volumes:
            - db-data:/var/lib/mysql/data
        command: --default-authentication-plugin=mysql_native_password # run this command in the container
        networks:
            - database-api
        restart: always # the container must be always on
        env_file:
            - mysql.env # inject the environment variables defined in the file "mysql.env"
        
    api:
        build: ./node # use the Dockerfile in the folder "node" for creating the image for this container
        networks:
            - database-api
            - frontend-api
        depends_on: # the container won't be started until the "database" container is running
            - database
        restart: unless-stopped # the container will be always on unless it was manually stopped
                
    frontend:
        image: httpd
        ports:
            - "1234:80" # map the container port 80 to the host port 1234
        networks:
            - frontend-api
        volumes:
            - ./htdocs:/var/www/html
        depends_on: # the container won't be started until the "api" container is running
            - api
        environment:
            AllowOverride: None # set an environment variable for the container
        restart: unless-stopped # the container will be always on unless it was manually stopped

            
volumes:
    db-data:

networks:
    database-api:
    frontend-api: