okd/roles/openshift_node/tasks/prepull.yml

---
- name: Check that node image is present
  command: 'docker images -q "{{ osn_image }}"'
  register: node_image

# This task runs async to save time while the node is being configured
- name: Pre-pull node image
  docker_image:
    name: "{{ osn_image }}"
  environment:
    NO_PROXY: "{{ openshift.common.no_proxy | default('') }}"
  when: node_image.stdout_lines == []
  # 10 minutes to pull the image
  async: 600
  poll: 0
  register: image_prepull