---
- name: retrieve machine DPKG architecture
  ansible.builtin.command:
    cmd: dpkg --print-architecture
  register: dpkg_architecture
  changed_when: false
- name: ensure Docker repository is present
  ansible.builtin.copy:
    content: "deb [arch={{ dpkg_architecture.stdout }} signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian {{ ansible_distribution_release }} stable"
    dest: /etc/apt/sources.list.d/docker.list
    owner: root
    group: root
    mode: 0644