services:
  mediacrawler:
    build: .
    image: mediacrawler:latest
    container_name: mediacrawler
    restart: unless-stopped

    # host networking is a requirement, not a convenience: the crawler attaches
    # to the operator's Chrome at 127.0.0.1:9222, and inside a bridge network
    # that loopback is the container's own, where no browser is listening.
    # It also puts the app port directly on the host, so `ports:` is not used.
    network_mode: host

    env_file:
      - .env
    environment:
      MC_HOST: 0.0.0.0
      MC_PORT: "18051"
      TZ: Asia/Shanghai

    volumes:
      # The code is mounted rather than baked in, so shipping a change is
      # "re-upload the tarball, restart" instead of an image rebuild. Only the
      # dependencies live in the image, because those are the expensive part and
      # they change rarely -- rebuild only when requirements.txt or the
      # Dockerfile itself changes.
      - ./:/app