Provide a guide for using the image

Hi, I found this repo and the docker image but there are no real instructions provided for running it.

Sure there is: docker run --rm -it openwrtorg/rootfs but this does not help as it does not get the container running properly:

Failed to resize receive buffer: Operation not permitted
/etc/preinit: line 5: can't create /sys/devices/system/cpu/microcode/reload: Read-only file system
ip: RTNETLINK answers: Operation not permitted
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
ip: can't send flush request: Operation not permitted
ip: SIOCSIFFLAGS: Operation not permitted
Please press Enter to activate this console.

What caps does one need to add to get this running?
Does it need to be in privileged mode?
What devices need to be mounted into the container?
How can the webinterface be launched?

I want to use this image for having a router on my home server in docker for my home network.

Thank you and all the best!

Start with the documented docker run --rm -it openwrtorg/rootfs command and reproduce the reported startup errors. Investigate the required capabilities, privileged mode, mounted devices, and web-interface startup path, then add a guide that explains how to run the image for the requested router use case and how to verify it is working.