services:
  midi-mqtt-bridge:
    image: python:3.11-slim
    network_mode: host
    restart: unless-stopped
    environment:
      MQTT_HOST: 10.40.0.2
      MQTT_PORT: "1883"
      MIXER_BASE_TOPIC: "mixer"
      HA_DISCOVERY_PREFIX: "homeassistant"
      MIXER_DEVICE_NAME: "Roland M-380"
      MIXER_MAP_PATH: "/config/m380_map.yaml"
      DEBUG: "1"
      PYTHONUNBUFFERED: "1"
      MIDO_BACKEND: "mido.backends.rtmidi"   # optional but nice
    volumes:
      - ./midi_mqtt_bridge.py:/app/bridge.py:ro
      - ./config:/config:ro
    devices:
      - /dev/snd:/dev/snd
    group_add:
      - "audio"
    working_dir: /app
    command: ["sh","-c",
      "apt-get update && apt-get install -y --no-install-recommends libasound2 \
       && pip install --no-cache-dir mido python-rtmidi paho-mqtt pyyaml \
       && python /app/bridge.py"
    ]