Hi Fritz,
We appreciate the feedback on this! ProGet 2025 will indeed have a separate dedicated mount for the database, but we didn't include this in the preview. As to the other issues, yes we do have a supervisor that attempts to start postgres and perform a clean shutdown on container stop... but there are some bugs we are working through, likely made worse by the ownership issues you discovered.
These concerns will absolutely be addressed before launch.
Again, thanks for trying it out and please let us know of any other issues you find or suggestions you may have!
-Greg