Install Docker on Ubuntu - Ansible Playbook

install-docker-and-compose.yaml

---
- name: Install Docker on Ubuntu
  hosts: workstations
  become: true

  tasks:
    - name: Update the apt package index
      apt:
        update_cache: true

    - name: Install required packages for HTTPS
      apt:
        name:
          - ca-certificates
          - gnupg
        state: present

    - name: Add Docker GPG key
      block:
        - file:
            path: /etc/apt/keyrings
            state: directory
            mode: '755'
        - ansible.builtin.get_url:
            url: "https://download.docker.com/linux/ubuntu/gpg"
            dest: /tmp/docker.asc
            mode: '600'
            force: true
        - shell: gpg --yes -o /etc/apt/keyrings/docker.gpg --dearmor /tmp/docker.asc
          args:
            creates: /etc/apt/keyrings/docker.gpg
        - file:
            path: /tmp/docker.asc
            state: absent

    - name: Get architecture
      command: dpkg --print-architecture
      register: dpkg_output
      changed_when: false

    - name: Get Ubuntu version codename
      shell: . /etc/os-release && echo "$VERSION_CODENAME"
      register: ubuntu_codename
      changed_when: false

    - name: Set up Docker repository
      copy:
        dest: /etc/apt/sources.list.d/docker.list
        content: "deb [arch={{ dpkg_output.stdout }} signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu {{ ubuntu_codename.stdout }} stable"
        owner: root
        group: root
        mode: '644'

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

    - name: Verify Docker Engine installation
      command: docker run hello-world
      register: result
      failed_when: "'Hello from Docker' not in result.stdout"

    - name: Verify Docker Compose installation
      command: docker compose version
      register: result
      failed_when: "'Docker Compose version' not in result.stdout"