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path: root/roles/docker/engine/tasks/main.yml
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---
- name: install docker daemon config
  when: docker_daemon_config is defined
  block:
  - name: create docker config directory
    file:
      name: /etc/docker
      state: directory
      mode: 0700

  - name: write docker daemon config
    copy:
      content: "{{ docker_daemon_config | to_nice_json }}\n"
      dest: /etc/docker/daemon.json
    notify: restart docker

- name: prepare storage volume for /var/lib/docker
  when: docker_storage is defined
  vars:
    storage_volume: "{{ docker_storage | combine({'dest': '/var/lib/docker'}) }}"
  include_role:
    name: "storage/{{ docker_storage.type }}/volume"

- name: prepare package provider
  when: docker_pkg_provider != 'distro'
  include_role:
    name: "apt-repo/{{ docker_pkg_provider }}"

- name: generate apt pin file for docker package
  when: docker_pkg_version is defined
  copy:
    dest: "/etc/apt/preferences.d/{{ docker_pkg_name }}.pref"
    content: |
      Package: {{ docker_pkg_name }}
      Pin: version {{ docker_pkg_version }}
      Pin-Priority: 1001

- name: remove apt pin file for docker package
  when: docker_pkg_version is not defined
  file:
    path: "/etc/apt/preferences.d/{{ docker_pkg_name }}.pref"
    state: absent

- name: install docker
  apt:
    name:
    - "{{ docker_pkg_name }}{% if docker_pkg_version is defined %}={{ docker_pkg_version }}{% endif %}"
    - "{{ python_basename }}-docker"
    state: present
    allow_downgrade: yes

  ## TODO: for now this is only needed on Debian Bullseye when using the docker.io package from the official repository
- name: install apparmor
  when:
  - docker_pkg_provider == 'distro'
  - ansible_distribution == 'Debian' and (ansible_distribution_major_version | int) == 11
  apt:
    name: apparmor
    state: present

- name: start and enable docker
  service:
    name: docker
    enabled: true
    state: started