version: '2.2'

volumes:
  config:

services:
  mqtt_client:
    build: .
    image: fphammerle/systemctl-mqtt
    volumes:
    - config:/etc/systemctl-mqtt:ro
    - /var/run/dbus/system_bus_socket:/var/run/dbus/system_bus_socket:rw
    command: systemctl-mqtt
      --mqtt-host mqtt-broker.local
      --mqtt-username raspberrypi
      --mqtt-password-file /etc/systemctl-mqtt/mqtt-password
    hostname: raspberrypi
    network_mode: host # TODO verify required
    userns_mode: host # required for host network mode
    user: root # TODO
    security_opt:
    - no-new-privileges
    - apparmor=unconfined # TODO
    # docker-compose >=2.2,<3
    cpus: 0.4
    mem_limit: 32M

# https://docs.docker.com/compose/compose-file/compose-file-v2/