Hi,
Thanks for your patience.
We found that the broken WebRTC is related to a missing package.
Please try to run the command below inside the container:
$ apt update
$ apt install libgstrtspserver-1.0-0 libgstrtspserver-1.0-dev libglew-dev libsoup2.4-dev libjson-glib-dev gstreamer1.0-nice
Please note that WebRTC might be blocked by the browser.
You can find more information about the setting in the topic below:
You might also need to set below configuration to enable WebRTC with https:
Thanks.