docker/swarm/worker.yml

classes:
  - system.docker.swarm.network.gwbridge
parameters:
  _param:
    docker_gwbridge_subnet: 10.20.0.0/16
  docker:
    swarm:
      role: worker
      advertise_addr: ${_param:single_address}
      master:
        host: ${_param:cluster_node01_address}