Test with ansible_date_time.

minisforum.yaml

@@ -1,6 +1,6 @@
 ---
 
-- name: Docker backup
+- name: Minisforum backup
   hosts: all
   gather_facts: True
   
@@ -8,9 +8,13 @@
     - name: Include container variables
       include_vars: vars/minisforum.yaml
 
+    - name: Register date
+      ansible.builtin.set_fact:
+        date: "{{ ansible_date_time.iso8601_basic_short }}"
+
 - name: Include the docker play
   import_playbook: docker-backup.yaml
   vars:
     backup_location: "/media/backup/docker/"
     containers: containers
-    date: ansible_date_time.iso8601_basic_short
+    date: ansible_facts.date