---
# REF: https://www.digitalocean.com/community/tutorials/how-to-use-ansible-to-install-and-set-up-docker-on-ubuntu-20-04

- name: "Install aptitude"
  ansible.builtin.apt:
    name: aptitude
    state: present
    update_cache: true

- name: "Install required system packages"
  ansible.builtin.apt:
    pkg:
      - apt-transport-https
      - ca-certificates
      - curl
      - gpg-agent
      - python3-pip
      - python3-setuptools
      - software-properties-common
      - virtualenv
    state: present
    update_cache: true

- name: "Add Docker GPG apt Key"
  ansible.builtin.apt_key:
    url: https://download.docker.com/linux/ubuntu/gpg
    state: present

- name: "Add Docker Repository"
  ansible.builtin.apt_repository:
    repo: "deb https://download.docker.com/linux/ubuntu {{ ansible_lsb.codename }} stable"
    state: present

- name: "Install Docker ecosystem"
  notify: "Sanity check"
  ansible.builtin.apt:
    pkg:
      - docker-ce={{ docker_ubuntu_version_full }}
      - docker-ce-cli={{ docker_ubuntu_version_full }}
    state: present
    update_cache: true

- name: "Ensure the 'docker' group exists"
  ansible.builtin.group:
    name: docker
    state: present
    system: true

- name: "Install Python tools for Docker"
  ansible.builtin.pip:
    name: [docker]
    break_system_packages: true

- name: "Configure Docker daemon"
  notify:
    - "Restart Docker daemon"
    - "Sanity check"
  ansible.builtin.template:
    src: daemon.json.j2
    dest: /etc/docker/daemon.json
    owner: root
    group: root
    mode: "0664"
    validate: "dockerd --validate --config-file=%s"

- name: "Spin up the Docker system service"
  notify: "Sanity check"
  ansible.builtin.systemd:
    name: docker
    state: started
    enabled: true