docker-compose.yml

version: "3.7"

services:
  # public port 80, the only port exposed
  web:
    restart: always
    build:
      context: ./frontend
      dockerfile: Dockerfile.nginx
      args:
        USE_NPM_MIRROR: "yes"
    ports:
      - "80:80"
    depends_on:
      - "backend"
  
  # api address on 0.0.0.0:8000
  backend:
    restart: always
    build:
      context: ./backend
      dockerfile: Dockerfile.django
      args:
        USE_PIP_MIRROR: "yes"
        USE_APK_MIRROR: "yes"
        USE_MYSQL: "yes"
    environment:
      VERILOG_OJ_HOST_STATIC: "yes"
      #VERILOG_OJ_PROD_DEBUG: "yes"
      VERILOG_OJ_JUDGER_SECRET: ${judger_secret}
      VERILOG_OJ_SECRET_KEY: ${secret_key}
      VERILOG_OJ_USE_MYSQL: "yes"
      VERILOG_OJ_MYSQL_DATABASE: django_db
      VERILOG_OJ_MYSQL_HOST: db
      VERILOG_OJ_MYSQL_PORT: 3306
      VERILOG_OJ_MYSQL_USER: django
      VERILOG_OJ_MYSQL_PASSWORD: ${mysql_password}
      VERILOG_OJ_PUBLIC_HOST: ${public_host}
      VERILOG_OJ_RABBITMQ_PASSWORD: ${rabbitmq_password}
      DOCKER_JUDGER_HOST_PATH: ${docker_judger_host_path}
      DOCKER_HOST_DIR: ${docker_host_dir}
    volumes:
      - files-volume:/app/storage
    depends_on:
      - "db"
      - "mqserver"
      - "judgeworker"  # consumer starts first

  # Fix bug on Django entering Chinese characters
  # - The database connection settings only works with conn params
  # - And not on anything else
  # - Useful command: `show variables like 'character%';` in mysql
  # ref: https://stackoverflow.com/questions/45729326/how-to-change-the-default-character-set-of-mysql-using-docker-compose
  db:
    restart: always
    # 5.7 raises InnoDB limit, so VARCHAR(255) is possible
    # - So no need to alter Django stuff, probably
    # - http://mysql.rjweb.org/doc.php/limits#767_limit_in_innodb_indexes
    image: "mysql:5.7"

    # Notice the env below will only useful when no db file is given
    environment:
      MYSQL_ROOT_PASSWORD: ${mysql_root_password}
      MYSQL_DATABASE: django_db
      MYSQL_USER: django
      MYSQL_PASSWORD: ${mysql_password}
    volumes:
      - db-volume:/var/lib/mysql
    command: ['mysqld', '--character-set-server=utf8mb4', '--collation-server=utf8mb4_unicode_ci']

  mqserver:
    restart: always
    image: "rabbitmq:3.8-management"

    environment:
      RABBITMQ_DEFAULT_USER: user
      RABBITMQ_DEFAULT_PASS: ${rabbitmq_password}

  judgeworker:
    restart: always
    build:
      context: ./backend
      dockerfile: Dockerfile.judger
      args:
        USE_PIP_MIRROR: "yes"
        USE_APT_MIRROR: "yes"
        USE_MYSQL: "yes"
    environment:
      VERILOG_OJ_JUDGER_SECRET: ${judger_secret}
      VERILOG_OJ_SECRET_KEY: ${secret_key}
      VERILOG_OJ_USE_MYSQL: "yes"
      VERILOG_OJ_MYSQL_DATABASE: django_db
      VERILOG_OJ_MYSQL_HOST: db
      VERILOG_OJ_MYSQL_PORT: 3306
      VERILOG_OJ_MYSQL_USER: django
      VERILOG_OJ_MYSQL_PASSWORD: ${mysql_password}
      VERILOG_OJ_PUBLIC_HOST: ${public_host}
      VERILOG_OJ_RABBITMQ_PASSWORD: ${rabbitmq_password}
      DOCKER_JUDGER_HOST_PATH: ${docker_judger_host_path}
      DOCKER_HOST_DIR: ${docker_host_dir}
    depends_on:
      - "mqserver"

    # Bind mount to control host docker & map a dir so host can fetch easily
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ${docker_judger_host_path}:${docker_host_dir}

volumes:
  db-volume:
    driver: local
  files-volume:
    driver: local