ansible-role-swarm/test/integration/default/default.yml

---
- hosts: default
  connection: local
  vars:
    docker_networks:
      - name: workgroup
        subnet: 192.168.1.0/24
        gateway: 192.168.1.1
    docker_services:
      test:
        version: '2.4'
        networks:
          default:
            external:
              name: workgroup
        services:
          test:
            image: alpine:latest
            entrypoint: /bin/sleep infinity
            restart: always
  roles:
    - ansible-role-docker