use string for chmod

playbooks/45-oc-mirror.yml

@@ -144,7 +144,7 @@
             state: directory
             owner: "{{ item.owner | default('root') }}"
             group: "{{ item.group | default('root') }}"
-            mode: "{{ item.mode | default(0755) }}"
+            mode: "{{ item.mode | default('0755') }}"
           loop:
             - path: /local/overlay/upper
             - path: /local/overlay/work