---

- name: Ensure "docker" group exists
  group:
    name: "{{ docker_group }}"
    state: present

- name: Add user to docker group
  user:
    name: "{{ ansible_user }}"
    groups:
      - "{{ docker_group }}"
    append: yes

- name: Update docker daemon configuration
  when: docker_userland_proxy is defined
  block:
    - name: Check if docker daemon configuration exists
      stat:
        path: /etc/docker/daemon.json
      register: docker_config_stat
    - name: Load docker daemon configuration
      when: docker_config_stat.stat.exists
      slurp:
        path: /etc/docker/daemon.json
      register: docker_config
    - name: Parse docker daemon configuration
      when: docker_config_stat.stat.exists
      set_fact:
        docker_config: "{{ docker_config.content | b64decode | from_json }}"
    - name: Set default docker daemon configuration
      when: not docker_config_stat.stat.exists
      set_fact:
        docker_config: {}
    - name: Add registry to docker daemon configuration
      vars:
        new_config:
          userland-proxy: "{{ docker_userland_proxy }}"
      set_fact:
        docker_config: "{{ docker_config | combine(new_config) }}"
    - name: Save docker daemon configuration
      copy:
        content: "{{ docker_config | to_nice_json }}"
        dest: /etc/docker/daemon.json
      become: true

- name: Reset ssh connection to pick up docker group
  meta: reset_connection