ansible/test/integration/targets/docker_container/tasks/tests/image-ids.yml

---
- name: Registering container name
  set_fact:
    cname: "{{ cname_prefix ~ '-iid' }}"
- name: Registering container name
  set_fact:
    cnames: "{{ cnames }} + [cname]"

- name: Pull images
  docker_image:
    name: "{{ item }}"
    pull: true
  loop:
    - "hello-world:latest"
    - "alpine:3.8"

- name: Get image ID of hello-world and alpine images
  docker_image_facts:
    name:
    - "hello-world:latest"
    - "alpine:3.8"
  register: image_facts

- assert:
    that:
      - image_facts.images | length == 2

- name: Print image IDs
  debug:
    msg: "hello-world: {{ image_facts.images[0].Id }}; alpine: {{ image_facts.images[1].Id }}"

- name: Create container with hello-world image via ID
  docker_container:
    image: "{{ image_facts.images[0].Id }}"
    name: "{{ cname }}"
    state: present
  register: create_1

- name: Create container with hello-world image via ID (idempotent)
  docker_container:
    image: "{{ image_facts.images[0].Id }}"
    name: "{{ cname }}"
    state: present
  register: create_2

- name: Create container with alpine image via ID
  docker_container:
    image: "{{ image_facts.images[1].Id }}"
    name: "{{ cname }}"
    state: present
  register: create_3

- name: Create container with alpine image via ID (idempotent)
  docker_container:
    image: "{{ image_facts.images[1].Id }}"
    name: "{{ cname }}"
    state: present
  register: create_4

- name: Cleanup
  docker_container:
    name: "{{ cname }}"
    state: absent
    stop_timeout: 1

- assert:
    that:
      - create_1 is changed
      - create_2 is not changed
      - create_3 is changed
      - create_4 is not changed