Is there any chance of migrating the current RPi4 image from Docker to Podman?
It would help reduce overhead, add security, and open up a few more options for networking (such as using a macvlan network rather host or bridge).
(I'm biased, as I am looking at the RPi4 image for the RPi4 kernel, HW transcoding, easier maintenance, but also running a Unifi Controller instance with a separate MAC.
Also, Podman has built-in support for honoring SELinux contexts.)