I found out that #jsxc, (web browser #xmpp client) has also a standalone singlepage evelope. I made few adjustments to be able to run it as docker container.

More info in the pull request. I don't know if maintainer will like it, maybe it will remain as a fork...

https://github.com/jsxc/jsxc-single-page/pull/28

Thanks, I didn't know there is a windows port. It is very relevant for me as the rest of my family is on Windows (using #gajim, testing web client #jsxc). I am definately going to test it. 👍