Search for portable Jellyfin media server projects. It looks like there’s a few out there.

If you’re going to use this in a car, it needs to be as simple as plugging in a single device and powering it on. An over-engineered solution is going to quickly turn into a headache.

You do. It automatically reboots after applying rpm-ostree updates.

You’re right and I’m not saying that I recommend settling it to permissive. You should understand the risks involved.

I’ve been using Fedora CoreOS as my main server in my home lab for a couple years now and have been very happy with it. You still get the convenience of automatic atomic updates and you also have the flexibility of being able to install whatever additional Fedora packages you need with rpm-ostree.

I installed Docker Engine and docker-compose from upstream. You should be able to set SELinux to permissive mode if you need to so it doesn’t enforce any policies.

They stopped the flash sales after they implemented their refund policy.

Tailscale. Use Headscale if you prefer self hosting over using their cloud service.

I don’t have an Nvidia card myself but have you tried the latest Wine-GE through Heroic?

Worst case, you can pick up the native Linux version on Steam right now for 80% off.

There’s Headscale if you want to avoid the Tailscale cloud service.

The original SteamOS was based on Debian. But that’s been unmaintained for years. Don’t use it.

SteamOS 3.5 is currently available for the Steam Deck only and is based on Arch Linux. Valve plans on generally releasing it but they haven’t yet.

The latest Debian or Ubuntu should work fine.