fix ansible-lint errors

roles/docker_ubuntu/molecule/default/verify.yml

@@ -9,7 +9,7 @@
     - name: "Include default vars"
       ansible.builtin.include_vars:
         dir: "{{ lookup('env', 'MOLECULE_PROJECT_DIRECTORY') }}/defaults/"
-        extensions: [ 'yml' ]
+        extensions: ['yml']
 
     - name: "Sanity check Docker by running a `hello-world` container"  # noqa: no-changed-when
       ansible.builtin.command:
@@ -19,13 +19,13 @@
       ansible.builtin.command:
         cmd: "docker compose version"
 
-    - name: "Check if Docker has the expected version"  # noqa: no-changed-when
-      register: docker_version
+    - name: "Get docker version"  # noqa: no-changed-when
+      register: docker_ubuntu_current_version
       ansible.builtin.command:
         cmd: "docker version --format '{{ '{{' }} .Server.Version {{ '}}' }}'"
 
     - name: "Check if Docker has the expected version"  # noqa: no-changed-when
       ansible.builtin.assert:
-        that: "du_docker_version in docker_version.stdout"
-        success_msg: "Docker has the expected version ({{ docker_version.stdout }} )"
-        fail_msg: "Unexpected Docker version ({{ docker_version.stdout }})"
+        that: "docker_ubuntu_version in docker_ubuntu_current_version.stdout"
+        success_msg: "Docker has the expected version ({{ docker_ubuntu_current_version.stdout }} )"
+        fail_msg: "Unexpected Docker version ({{ docker_ubuntu_current_version.stdout }})"