---
# Part of role: docker
# Called by: ansible/playbooks/setup-gpu-node.yaml, ansible/roles/homeassistant (meta dependency)
# Description: Installs Docker CE, adds user to docker group. Works on both Debian and Ubuntu.

- name: Install Docker prerequisites
  ansible.builtin.apt:
    name:
      - ca-certificates
      - curl
    state: present
    update_cache: true

- name: Create apt keyrings directory
  ansible.builtin.file:
    path: /usr/share/keyrings
    state: directory
    mode: "0755"

- name: Add Docker GPG key
  ansible.builtin.shell:
    cmd: >
      curl -fsSL https://download.docker.com/linux/{{ ansible_facts['distribution'] | lower }}/gpg |
      gpg --dearmor -o /usr/share/keyrings/docker.gpg
    creates: /usr/share/keyrings/docker.gpg

- name: Add Docker apt repository
  ansible.builtin.apt_repository:
    repo: >
      deb [arch=amd64 signed-by=/usr/share/keyrings/docker.gpg]
      https://download.docker.com/linux/{{ ansible_facts['distribution'] | lower }}
      {{ ansible_facts['distribution_release'] }} stable
    filename: docker
    state: present

- name: Install Docker CE and Compose plugin
  ansible.builtin.apt:
    name:
      - docker-ce
      - docker-ce-cli
      - containerd.io
      - docker-buildx-plugin
      - docker-compose-plugin
    state: present
    update_cache: true

- name: Ensure Docker service is running and enabled
  ansible.builtin.systemd:
    name: docker
    state: started
    enabled: true

- name: Add user to docker group
  ansible.builtin.user:
    name: "{{ username }}"
    groups: docker
    append: true