roles/pull-xos-docker-images/tasks/main.yml

---
# pull-xos-docker-images/tasks/main.yml

- name: Pull latest versions of images if not present
  docker_image:
    name: "{{ item }}:latest"
    repository: "{{ item }}:candidate"
  with_items:
    - xosproject/xos-postgres
    - xosproject/vsg
    - redis