boma/roles/docker_host/molecule/default/verify.yml

---
- name: Verify
  hosts: all
  gather_facts: true

  tasks:
    - name: Verify docker binary is present
      ansible.builtin.command: docker --version
      register: docker_version_output
      changed_when: false
    - name: Assert docker --version succeeded
      ansible.builtin.assert:
        that: docker_version_output.rc == 0
        msg: "docker --version failed — Docker was not installed correctly"