Hi. One of the core LibreTime maintainers here. LibreTime is in alpha, in that we do not currently provide support for versions earlier than the current. LT was forked from a very mature project, Airtime, which had died (the open source portion at least).
Azuracast is similar to LibreTime, however it does not provide the scheduling power that LT has.
I am not familiar with Cloudron packaging, but I am happy to help from the LibreTime side. We have community supported Docker images that haven't seen development for a while. We are busy updating those and moving them to a more official location. That should hopefully be done soon (TM).