oranki

I'm very much biased towards Podman, but from what I understand rootless Docker is a bit of an afterthought, while Podman has been developed from the ground up with rootless in mind. That should be reason enough.

The very few things Docker can do that Podman struggles a bit with are stuff that usually involves mounting the Docker socket in the container or other stupid things. Since you care about security, you wouldn't do that anyway. Not to mention there's also rootful Podman, when you need that level of access.

I'd recommend an RPM-based distro with Podman, the few times I've tried Podman on a deb distro, there's always been something wonky. It's been a while, though.

It's a really solid combo, but if you're not familiar with CoreOS I wouldn't change both at once. Meaning migrate the services to Podman first, then switch the OS. I've meant to switch from Alma 9 to CoreOS a long time, but haven't found the time.

I noticed you run Nextcloud AIO, just so you know, that's one of those "mount the docker socket" monstrosities. I'd look into switching to the community NC image and separate containers managed yourself. AIO is easy, but if someone gets shell to the NC container, it's basically giving root to your host.

Either way, you're going to have trouble running AIO with Podman.

Thanks. Last time I tried it was just after bookworm released, and on ARM, so it has probably got better

I have to join the choir, what do you mean dying and doesn't work? If proprietary apps don't support it, it's just because it's one of the best ways to lock people in.

Have you considered lowering the unprivileged port limit instead?

sudo sysctl -w net.ipv4.ip_unprivileged_port_start=53 | sudo tee -a /etc/sysctl.conf  

Then remove the firewall rule and bind to port 53.

Edit: typo

You need the G account to be able to install apps from Play Store, I don't believe the private space itself requires it.

Not sure if there's some Play "integrity check" on stock ROMs, but on GOS I was able to create the private space and download&install F-droid or other APKs just fine, without a Google account.

Maybe you get the possibility of routing all traffic from a container (or all the containers in that namespace/network) over the tailnet this way? With the host method, you'd need the host to use the exit node too.