fix: missing docker group + template error

playbooks/install-docker.yml

@@ -53,9 +53,16 @@
             - docker-buildx-plugin
             - docker-compose-plugin
           force: true
+        ignore_errors: '{{ ansible_check_mode }}'
 
-  - name: Install 
+  - name: Ensure group "docker" exists
+    ansible.builtin.group:
+      name: docker
+      state: present
+
+  - name: Add user to group
     ansible.builtin.user:
       name: "{{ ansible_user_id }}"
       groups: docker
       append: yes
+    ignore_errors: '{{ ansible_check_mode }}'