Test deploy quick startup image from Xing

!!Note: this is for the testing purpose, we will rollback after and
using the official QEapp image after it is merged and released.

basehub/values.yaml.j2

@@ -9,8 +9,8 @@ jupyterhub:
                 contactEmail: [email protected]
     singleuser:
         image:
-            name: ghcr.io/aiidalab/qe
-            tag: amd64-v24.10.0a0
+            name: superstar54/qe-tar-home-z
+            tag: latest
             pullPolicy: Always
         cmd:
             - start-singleuser.sh