- name: Semaphore connectivity test
  hosts: all
  become: true

  tasks:
    - name: Print whoami
      command: whoami
      register: whoami_output

    - name: Show whoami result
      debug:
        msg: "Running as user: {{ whoami_output.stdout }}"

    - name: Print hostname
      command: hostname
      register: hostname_output

    - name: Show hostname
      debug:
        msg: "Host name is: {{ hostname_output.stdout }}"

    - name: Check docker is available
      command: docker --version
      register: docker_output
      changed_when: false

    - name: Show docker version
      debug:
        msg: "{{ docker_output.stdout }}"