Offer "bleeding edge" images

[capital-G]

Based on the docs and source code the jitsi version of docker-jitsi-meet is bound to the debian releases which will only get an update on a major release. There is no official source when such major releases will occur, only discourse posts.

For me one major advantage of docker deployments is to have a a version of choice without the hassle of building etc. Because there are multiple new features on the master branch of jitsi-meet which are not yet reflected in a major release I would suggest to match the releases on github for each project. This could also make integration tests a lot easier for development.

I would also be glad to participate although I would first discuss this before I spent time on this issue.