ceph-ansible/roles/ceph-rgw/tasks/docker/start_docker_rgw.yml

---
- name: run the rados gateway docker image
  docker:
    image: "{{ ceph_rgw_docker_username }}/{{ ceph_rgw_docker_imagename }}"
    name: ceph-{{ ansible_hostname }}-rgw
    expose: "{{ ceph_rgw_civetweb_port }}"
    ports: "{{ ceph_rgw_civetweb_port }}:{{ ceph_rgw_civetweb_port }}"
    state: running
    env: "CEPH_DAEMON=RGW,{{ ceph_rgw_docker_extra_env }}"
    volumes: "/var/lib/ceph:/var/lib/ceph,/etc/ceph:/etc/ceph"