docker-compose.yml

version: "3.9"
services:

  ocrd-controller:
    build:
      context: .
      # args:
      #   VCS_REF: ...
      #   BUILD_DATE: ...

    image: ${CONTROLLER_IMAGE}

    hostname: ${CONTROLLER_HOST}

    environment:
      - UID=${CONTROLLER_ENV_UID}
      - GID=${CONTROLLER_ENV_GID}
      - UMASK=${CONTROLLER_ENV_UMASK}
      - WORKERS=${CONTROLLER_WORKERS}

    volumes:
      - type: bind
        source: ${CONTROLLER_KEYS:-controller-keys-not-defined} # ocrd manager public key
        target: /authorized_keys
      - ${CONTROLLER_MODELS:-controller-models-not-defined}:/models
      - ${CONTROLLER_DATA:-controller-data-not-defined}:/data

    deploy:
      resources:
        limits:
          cpus: ${CONTROLLER_WORKERS}
        reservations:
          devices:
            - capabilities: [gpu]
            # we want to reserve _up to_ 1 device
            # (not more, because 1 can typically be shared across workers already,
            #  and for physical multi-GPU, we should instead use swarm anyway)
            # but the semantics of "count" is _at least_ unfortunately
            # (which would fail on CPU-only systems), so just leave unspecified
            #  count: 1