GPU Passthrough

Hey, would like to know if this container is capable of passing through a gpu to the vm inside the container. I have looked into the upstream docker container qemus/qemu-docker, which seems to have some logic to work with gpu passthrough, though some documentation for this here would be great, if it is possible.

I also tried to connect to the container using virtual machine manager, but unfortunately i wasnt able to connect to it. Any idea why?