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this post was submitted on 02 Nov 2023
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If your distro offers it, rootless podman + podman system service is the best setup, IMO. That will give you a
dockercommand that is 1-to-1 compatible with docker and lets you use tools like docker-compose that expect a docker service socket. Then you can just follow tutorials that only explain things for docker.What is rootless bring brought up so much? It's a container, it's isolated from the host anyway, what does it matter what user runs inside? And if something breaks into the container they can trash the app in it and the shared volumes anyway, even if they're not root.
It depends on the use case. The most common security issue I have seen with docker is on Linux desktop systems: docker deamon runs as root and user wants to use it to test all kinds of containers. So they make the docker socket accessible to the user, to lazy to use "sudo docker" every time... Having access to the docker socket means having the same permissions as the one running the daemon: root . Your browser effectively now has root permissions. At this point you could just login as root to your desktop.