geerlingguy.ansible-role-docker/tasks/docker-compose.yml

---
- name: Check current docker-compose version.
  command: docker-compose --version
  register: docker_compose_current_version
  changed_when: false
  failed_when: false

- name: Get latest version from docker-compose (if configured)
  block:
    - name: Get latest version of docker-compose from Github API
      uri:
        url: https://api.github.com/repos/docker/compose/releases/latest
        return_content: yes
      register: url_content
      delegate_to: localhost

    - name: Set latest version in docker_compose_version variable
      set_fact:
        docker_compose_version: "{{url_content.json.name }}"
  when: docker_compose_version == 'latest'

- name: Delete existing docker-compose version if it's different.
  file:
    path: "{{ docker_compose_path }}"
    state: absent
  when: >
    docker_compose_current_version.stdout is defined
    and docker_compose_version not in docker_compose_current_version.stdout

- name: Install Docker Compose (if configured).
  get_url:
    url: https://github.com/docker/compose/releases/download/{{ docker_compose_version }}/docker-compose-Linux-x86_64
    dest: "{{ docker_compose_path }}"
    mode: 0755