docker.yml

- name: Install Docker engine
  hosts: all
  become: true
  vars_prompt:
    - name: 'user'
      prompt: 'Enter the name of the user to add to the docker group:'
      private: no
  tasks:
    - name: Gather the package facts
      package_facts:
        manager: auto

    - name: Set distribution variable
      set_fact:
        distribution: "{{ ansible_facts['distribution'] | lower }}"

    - name: Uninstall old versions
      apt:
        name:
          - docker
          - docker-engine
          - docker.io
          - containerd
          - runc
        state: absent
        autoremove: true
        update_cache: true
      when: distribution == 'debian' or distribution == 'ubuntu'

    - name: Remove docker repository file
      file:
        path: /etc/apt/sources.list.d/docker.list
        state: absent
      when: distribution == 'debian' or distribution == 'ubuntu'

    - name: Install dependencies (Debian/Ubuntu)
      apt:
        name:
          - ca-certificates
          - curl
          - gnupg
          - lsb-release
        state: present
        update_cache: true
      when: distribution == 'debian' or distribution == 'ubuntu'

    - name: Add Docker GPG apt Key (Debian/Ubuntu)
      apt_key:
        url: https://download.docker.com/linux/{{ distribution }}/gpg
        state: present
      when: distribution == 'debian' or distribution == 'ubuntu'

    - name: Add Docker Repository (Debian/Ubuntu)
      apt_repository:
        repo: "deb [arch=amd64] https://download.docker.com/linux/{{ distribution }} {{ ansible_facts['distribution_version'] }} stable"
        state: present
      when: distribution == 'debian' or distribution == 'ubuntu'

    - name: Install docker engine, containerd, and Docker Compose (Debian/Ubuntu)
      apt:
        name:
          - docker-ce
          - docker-ce-cli
          - containerd.io
          - docker-compose
        state: present
        update_cache: true
      when: distribution == 'debian' or distribution == 'ubuntu'

    # Add equivalent tasks for CentOS, Fedora, Raspbian etc., by checking distribution and using respective package managers (yum/dnf) and commands.

    - name: Test docker
      command: docker info

    - name: Test docker compose
      command: docker compose version

    - name: Add remote "{{ user }}" user to "docker" group
      user:
        name: '{{ user }}'
        groups: docker
        append: yes
      tags:
        - docker