In general, Docker doesn’t virtualize graphics hardware in the way that VMWare Workstation does.
However: If you will only ever run one Docker instance using the graphics hardware (so, no host X windows,) then you could perhaps export the devfs into the docker container and run X and Unreal Engine on the “inside” of that container with direct hardware access.
There’s not a super big difference between this, and just providing a basic Linux image with UE pre-installed, though 