[usr1106]

This article is from a Windows perspective.

On Linux podman is significantly different from docker: It uses user namespaces. So it is much more secure (assuming that security bugs related to Linux user namespaces, which have indeed been dicovered, are still much rarer than people running untrusted container images). However, with security comes incompatibility. If the image does tricky system interaction instead of just running user space code and some standard cases like opening a socket chances are that things will not work under podman without modification.