Some files are owned by different user in bind mount

[KShivum]

So I'm having trouble moving over from Docker to Podman. I have a Gitlab docker compose file and when running it, most of the files are the user that ran the compose but it seems like some data and the redis server are some other user/group, is it possible to have it all as one user?
https://www.redhat.com/sysadmin/container-permission-denied-errors
I was following this and I found the :U suffix for the bind mount, but it doesn't seem like it works in compose

[eriksjolund]

You can use --userns keep-id:uid=$uid,gid=$gid to map a container user to your regular user on the host.
Files that this container user creates will be owned by your regular user on the host.

The tricky part can be to know which $uid and $gid to use. I tried to automate this detection with a script:
https://github.com/eriksjolund/podman-detect-option

For docker.io/library/redis it seems you would need to use
--userns keep-id:uid=999,gid=999
or maybe
--userns keep-id:uid=999,gid=999 --user 999:999

[eriksjolund]

I forgot to mention:
I don't know if there is a way to provide the --userns keep-id:uid=999,gid=999 option to docker-compose.
An alternative is to migrate the compose file to quadlet files, for instance with podlet

[KShivum]

So the issue is, the gitlab ce image only uses one container, I don't have access to the redis instance it makes, I tried to set the id to my user, however gitlab itself kept getting permission denied errors. I'll see if I can post my compose file a bit later