Podman

I value security over availability

So many updates are not security related, though. The rare security update isn't worth the frequent outage IMHO.

But you're right: giving the people that option is a good thing - as long as it's an option.

You can set Internal=true, which I use whenever possible, which means access is only to anything on same network (for me that's itself and Caddy) - no outgoing connections at all. Podman uses PASTA by default for rootless.

This is very timely. I have a few VPSes which I've locked down to the best of my non-OPs background ability: one gateway exposed to the internet, and the rest completely firewalled off and only accessible over private VPN. What I've recently been trying to figure out is how to lock my containers down so they only have access to the host+ports they need to. E.g., caddy is mainly a reverse proxy, except for serving static content from a RO mounted directory, but I'm at my networking knowledge limit on how to keep it from accessing local host ports. Same with the SMTP and IMAP services - SMTP of particularly challenging because I do want it to access the internet, but not access local host ports.

It's been driving me a little nutty. It looks like this would make all that a lot easier.