I see 6 officially supported linux distributions. I don't know where anyone got the idea that they can only get it to run on ubuntu. It's containerized. Who cares what the host os is, beyond "it can run containers"?
And I wish it was "containerized" but really it's "dockerized" as this thread demonstrates: https://central.owncloud.org/t/owncloud-docker-image-with-ro...
So yeah like I said in my original comment, for personal use it's just not right for me (because I choose not to use docker in my personal projects), but I hope it's right for other people because it looks like a killer app.
I'd definitely like to see what other options are available on other distros so I'll dig through their documentation more.
And yeah, trying to use podman with something that's based on docker compose is ... probably gonna give you some headaches, I'd guess. I don't particularly know the pitfalls but if you're expecting it to be transparently swappable, I don't think that's an owncloud issue.
I've seen some flame in this community, but damn this thread has just been a bunch of polite people helping correct the record.