I know there’s this thread (which is a bit more outdated): How to develop penpot with podman (penpotman)
But it seems like the original author didn’t get it fully working w/ Podman.
As I’m not a big fan of Docker and moving all my containerization to Podman, I went and got a running set up going, and pushed up my efforts to a public repo here - GitHub - ThirteenTwoConsulting/PenpotPodman
If there’s interest on a cleaner understanding of what to do let me know, but it’s pretty straight forward once you have Podman installed on your system.
One clean up that can happen is to use a pod instead of doing things like this, but this has been more of a PoC than anything else for me.