- name: Install dependencies for Docker
  apt:
    name: "{{ docker_dependencies }}"
    update_cache: true

- name: Add Docker apt key.
  get_url:
    url: "{{ docker_apt_gpg_key }}"
    dest: /etc/apt/trusted.gpg.d/docker.asc
    mode: '0644'
    force: true
  register: add_repository_key

- name: Add Docker repository
  apt_repository:
    repo: "{{ docker_apt_repository }}"
    state: present
    update_cache: true

- name: Install Docker packages
  apt:
    name: "{{ docker_packages }}"

- name: Ensure /etc/docker/ directory exists
  file:
    path: /etc/docker
    state: directory
    mode: 0755
  when: docker_options.keys() | length > 0

- name: Configure Docker daemon options
  copy:
    content: "{{ docker_options | to_nice_json }}"
    dest: /etc/docker/daemon.json
    mode: 0644
  when: docker_options.keys() | length > 0
  notify: restart docker

- name: Ensure Docker is started and enabled at boot.
  service:
    name: docker
    state: started
    enabled: true

- name: Get docker group info using getent.
  getent:
    database: group
    key: docker
    split: ':'
  when: docker_users | length > 0

- name: Check if there are any users to add to the docker group
  set_fact:
    add_to_group: true
  when:
    - docker_users | length > 0
    - item not in ansible_facts.getent_group["docker"][2]
  with_items: "{{ docker_users }}"

- include_tasks: docker-users.yml
  when: add_to_group is defined