This gives you a basic live video streaming setup for the Janus WebRTC gateway https://janus.conf.meetecho.com/
You can add your own configuration files on top of this image.
It comes with the admin HTTP and WebSocket interfaces enabled, and a simple streaming endpoint setup for testing h264 video over RTP. This lets you transmit live h264 video via RTP (using gstreamer or whatever you prefer) to Janus, and view the stream in a web browser with WebRTC. Pretty nifty stuff IMO.
There are some useful Makefile targets.
Based on Janus 0.1.1