ignore likely errors if in ansible_check_mode

handlers/main.yml

@@ -1,3 +1,4 @@
 ---
 - name: restart docker
   service: "name=docker state={{ docker_restart_handler_state }}"
+  ignore_errors: "{{ ansible_check_mode }}"

tasks/main.yml

@@ -16,6 +16,7 @@
     name: docker
     state: "{{ docker_service_state }}"
     enabled: "{{ docker_service_enabled }}"
+  ignore_errors: "{{ ansible_check_mode }}"
 
 - name: Ensure handlers are notified now to avoid firewall conflicts.
   meta: flush_handlers