How to use Rpi HDMI to display (Docker) GUI Apps?

The idea is to use the Raspberry Pi 4 HDMI Output to display web browser running on docker, or any other method to use the HDMI to display video / GUI.

Is it possible? can someone share any ideas how to?

If docker is not possible, there is any other idea how to use the Display Output like VNC client, raw video receive and display from remote server, etc?

Assumptions that may be incorrect:
Since x11 isn't available on OpenWRT forwarding docker x11 socket isn't possible. i try to attach whole devices to the container but unsuccessful right now.