Create registry login script

That script might be helpful when container registry
credentials are wrong.

Change-Id: I5b23b0bcadecdf689e20f39744db4a12566823e6

tasks/registry-login.yml

@@ -24,6 +24,17 @@
       debug:
         msg: "Warning: login failed for some credentials while using docker login"
 
+    - name: Create login script
+      copy:
+        content: |
+          #!/bin/bash
+          docker login "{{ item.key }}" \
+           --username "{{ lookup('dict', item.value).key }}" \
+           --password "{{ lookup('dict', item.value).value  }}"
+        dest: "/tmp/podman-login-script-{{ item.key }}.sh"
+      loop: "{{ query('dict', container_registry_logins | default({})) }}"
+      ignore_errors: true
+      when: "{{ container_registry_login_script | default(false) }}"
+
 - import_tasks: cleanup-engine.yml
   when: container_registry_cleanup_client
-