---
- name: Install Docker on Raspberries
  hosts: docker
  roles: 
    - common
  become: yes
  gather_facts: no
  
  tasks:
  
  - name: Download Docker install script
    ansible.builtin.get_url:
      url: https://test.docker.com/
      dest: ./get-docker.sh
      group: "{{ ansible_user }}"
      mode: '0755'

  - name: Trigger script
    ansible.builtin.command:
      cmd: ./get-docker.sh >> get-docker.log

  - name: Ensure group "docker" exists 
    ansible.builtin.group:
      name: docker
      state: present

  - name: Add user to "docker" group
    ansible.builtin.user:
      name: "{{ ansible_user }}"
      group: docker

  - name: Reboot
    ansible.builtin.reboot:
      msg: "Reboot initiated by Ansible"

  - name: Install python3 and pip3
    ansible.builtin.apt:
      pkg: 
        - python3
        - python3-pip
      state: present

  - name: Install docker-compose
    ansible.builtin.command:
      cmd: sudo pip3 install docker-compose

  - name: Enable Docker service 
    ansible.builtin.systemd:
      name: docker
      enabled: yes

  - name: Run test container to ensure Docker works
    ansible.builtin.command:
      cmd: docker run hello-world
    register: result

  - name: Show test result
    ansible.builtin.debug:
      var: result

  - name: Cleanup install files
    ansible.builtin.command:
      cmd: sudo rm get-docker.*