services:
  massprice:
    build: .
    container_name: massprice
    # Headless Chromium's default /dev/shm (64MB) is too small in Docker
    # and causes renderer crashes — this is the standard mitigation.
    shm_size: "1gb"
    ports:
      - "${HOST_PORT:-5057}:5000"
    volumes:
      # Schedules, run history, the rule-name cache, and the saved
      # MassPrice login session must outlive `up -d --build`, which
      # recreates the container and discards its filesystem.
      - ./data:/data
    environment:
      - LOGIN_PASSWORD=${LOGIN_PASSWORD}
      - SECRET_KEY=${SECRET_KEY}
      - TZ=${TZ:-America/New_York}
    restart: unless-stopped