---
- name: Install Docker installation prerequisites
  become: true
  ansible.builtin.apt:
    update_cache: true
    # Don't upgrade, only make sure that the packages are present
    # state: latest
    name:
      - ca-certificates
      - curl
      - gnupg
      - lsb-release

- name: Retrieve Docker GPG key
  check_mode: false
  ansible.builtin.uri:
    url: https://download.docker.com/linux/debian/gpg
    return_content: true
  register: docker_gpg_key

- name: Install Docker GPG key
  become: true
  ansible.builtin.command: "gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg"
  args:
    stdin: "{{ docker_gpg_key.content }}"
    creates: /usr/share/keyrings/docker-archive-keyring.gpg

- name: Retrieve dpkg architecture
  check_mode: false
  ansible.builtin.command: dpkg --print-architecture
  register: dpkg_architecture
  changed_when: false

- name: Add Docker apt repository
  become: true
  ansible.builtin.template:
    src: docker.list.j2
    dest: /etc/apt/sources.list.d/docker.list
    mode: 0644

- name: Install Docker
  become: true
  ansible.builtin.apt:
    update_cache: true
    # Don't upgrade, only make sure that the packages are present
    # state: latest
    name:
      - docker-ce
      - docker-ce-cli
      - containerd.io