docker-compose.yaml

version: "3.9"


services:

  mysql:
    image: mysql
    volumes:
      # initialize db (tables creating)
      - ./database_initialization/sql:/docker-entrypoint-initdb.d
      # volume for persist data saving
      - db_volume:/var/lib/mysql
    environment:
      - MYSQL_RANDOM_ROOT_PASSWORD=yes
      - MYSQL_USER=$DB_USER
      - MYSQL_PASSWORD=$DB_PASSWORD
      - MYSQL_DATABASE=$DB_NAME
    command: --port $DB_PORT

  redis:
    image: redis
    command: --port $REDIS_PORT

  web:
    # image: maxzhenzhera/async_blog_aiohttp
    build: .
    # to embed prepared .env
    env_file:
      - .env
    # to override some connections vars (db - powered by docker)
    environment:
      DB_HOST: mysql
      REDIS_HOST: redis
      # for correct work [port exposing] in docker container
      SERVER_HOST: 0.0.0.0
    ports:
      - 5000:$SERVER_PORT
    depends_on:
      - mysql
      - redis
    # on first startup db takes time for initializing
    # any healthcheck is not used for this
    # so, to ensure final start of the web service
    # -> restart service always
    # (obviously, on first time it`ll be errors about db connecting)
    restart: always


volumes:
  db_volume: