Use overlay.

task/buildah-rootless-daemonless/0.1/buildah-rootless-daemonless.yaml

@@ -90,7 +90,7 @@ spec:
 
         additional_args=(--source-date-epoch 100
                          --layers
-                         --storage-driver vfs)
+                         --storage-driver overlay)
 
         if [ -n "\$(find /tekton/creds/.ssh -maxdepth 1 -name 'id_*' -print -quit)" ]; then
             eval \$(ssh-agent)
@@ -157,8 +157,8 @@ spec:
         # - name: BUILDAH_ISOLATION
         #   value: chroot
         - name: STORAGE_DRIVER
-          # value: overlay
-          value: vfs
+          value: overlay
+          # value: vfs
     - name: read-metadata
       image: python:3.13-alpine3.20
       workingDir: "$(workspaces.source.path)"