copyAppData pod using big (open-webui) image

Hey there,

I am not sure if copyAppData is 100% required, so it might be a nice option to turn it off completely if no persistence is used.
The primary issue I have identified (please correct me if I'm missing something!) is that the copyAppData startup container uses the big open-webui image instead of a customizable image (which should be a small image e.g. busybox by default ideally