Worked like a charm. Remember to take backups beforehand in any case!

Check out the krun runtime for podman, if you want stronger container isolation from the host. It creates a small VM for each container. Gpu passthrough on linux is limited though.

The EU comission is on such a wrong track with all this de-regulation and mass surveillance.

Sorry for not answering to your question directly, but why not just use subuids for separation instead?

podman run -d --restart unless-stopped \
  --uidmap "+0:@100001:1" \
  --name nginx-1 \
  --port 8081:80 \
  docker.io/library/nginx

podman run -d --restart unless-stopped \
  --uidmap "+0:@100002:1" \
  --name nginx-2 \
  --port 8082:80 \
  docker.io/library/nginx

From their site:

Taler does not introduce a new currency. Taler uses a digital wallet storing coins and payment service providers with settlement accounts in existing currencies. Thus, Taler’s cryptographic coins correspond to existing currencies, such as US Dollars, Euros or even Bitcoins.

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Are you running rootless or rootfull containers?

At least with rootless containers (I have not used roortfull) I think its quite pointless to create separate users for the services, as you could use just the subuids (and/or SELinux) to get container separation, as you already seem to do .

I run my quadlets with uidmap and gidmaps, so I get explicit control of the mappings. It can be a tad tedious at times but I think it’s worth the hassle.