async-container-fetch.yaml

- name: Async pull images from remote mirror and push into local registry
  docker_image:
    name: "{{ async_item.imagename }}"
    repository: "localhost:8787/{{ async_item.imagename | regex_replace('docker.io/') }}"
    push: yes
    debug: yes
  async: 1500
  poll: 0
  loop: "{{ images }}"
  loop_control:
    loop_var: "async_item"
  register: async_results

- name: async_result output?
  debug:
    var: async_results
- name: Check sync status
  async_status:
    jid: "{{ async_result_item.ansible_job_id }}"
  loop: "{{ async_results.results }}"
  loop_control:
    loop_var: "async_result_item"
  register: async_poll_results
  until: async_poll_results.finished
  retries: 30

inventory.yaml

all:
  hosts:
    primary:
      ansible_connection: local

pre-prep-docker.yaml

- hosts: primary
  become: true
  tasks:
    - name: Deploy Docker
      include_role:
        name: ansible-role-container-registry
        tasks_from: docker
      vars:
        # container_registry_mirror: "http://{{ zuul_site_mirror_fqdn }}:8081/registry-1.docker/"
        container_registry_debug: true
        container_registry_insecure_registries: ['localhost:8787']

    - name: Deploy a Docker Registry v2
      include_role:
        name: ansible-role-container-registry
        tasks_from: docker-distribution

    - meta: flush_handlers

    - name: Collect Docker config
      shell:
        docker info
      register: docker_info

    - name: Display Docker config
      debug: msg={{ docker_info.stdout_lines|list }}

    - name: Check for local containers list
      stat:
        path: /home/zuul/src/git.openstack.org/openstack/tripleo-common/container-images/overcloud_containers.yaml
      register: local_container_file

    - block:
      - name: Grab containers list from host
        slurp:
          src: /home/zuul/src/git.openstack.org/openstack/tripleo-common/container-images/overcloud_containers.yaml
        register: container_list
      when: local_container_file.stat.exists

    - block:
      - name: Build container_url
        set_fact:
          container_url: "http://git.openstack.org/cgit/openstack/tripleo-common/plain/container-images/overcloud_containers.yaml?h=master"

      - name: Create temporary file
        tempfile:
          state: file
          suffix: containers
        register: temp_containers_file
      
      - name: Fetch url
        get_url: 
          url: "{{ container_url }}"
          dest: "{{ temp_containers_file.path }}"
          force: True

      - name: Get containers data
        slurp:
            src: "{{ temp_containers_file.path }}"
        register: container_list 

      - name: Cleanup temp file
        file: 
          path: "{{ temp_containers_file.path }}"
          state: absent
      when: not local_container_file.stat.exists

    - name: Print container list file data
      debug: msg={{ container_list['content'] | b64decode }}

    - name: Set container_image_data
      set_fact:
        container_image_data: "{{ container_list['content'] | b64decode | from_yaml }}"

    - name: Print container_image_data
      debug: var=container_image_data

    - name: Install the latest version of python-docker-py required by ansible
      yum:
        name: python-docker-py
        state: latest

    - name: Pull images from remote mirror and push into local registry
      vars:
         container_images: "{{ container_image_data.container_images }}"
         images: "{{ item }}"
      include_tasks: async-container-fetch.yaml
      loop: "{{ container_image_data.container_images | batch(10) | list}}"