ansible/roles/install_docker/tasks/main.yml

---
- name: Add the docker repo key
  apt_key:
    url: https://download.docker.com/linux/debian/gpg
    state: present

- name: Add docker repo
  apt_repository:
    repo: deb [arch=amd64] https://download.docker.com/linux/debian buster stable
    # TODO replace by "... /linux/debian $(lsb_release -cs) stable"
    state: present

- name: Install docker
  apt:
    update_cache: true
    name:
      - docker-ce
      - docker-ce-cli
      - containerd.io
    state: latest
  register: apt_result
  retries: 3
  until: apt_result is succeeded

# Official methode for docker compose, redundant with pip
#- name: Install docker-compose
#  get_url:
#    url: https://github.com/docker/compose/releases/download/1.28.0/docker-compose-Linux-x86_64 
#    # TODO: replace by "...1.28.0/docker-compose-$(uname -s)-$(uname -m)"
#    dest: /usr/local/bin/docker-compose
#    mode: '0755'

# Methode requiered by ansible docker_compose module
- name: Install docker and docker-compose
  pip:
    name:
      - docker
      - docker-compose>=1.28.0