---
- name: Check current docker-compose version
  command: "{{ docker_compose_bin }} --version"
  register: docker_compose_current_version
  changed_when: false
  failed_when: false

- name: Renew existing docker-compose version if it's different
  file:
    path: "{{ docker_compose_bin }}"
    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
  get_url:
    url: https://github.com/docker/compose/releases/download/{{ docker_compose_version }}/docker-compose-Linux-x86_64
    dest: "{{ docker_compose_bin }}"
    mode: 0755
  when: >
    docker_compose_current_version.stdout is not defined
    or docker_compose_version not in docker_compose_current_version.stdout
...