MuseScore 4 for Linux with Jack MIDI/Audio support from an (ongoing) pull request #19246 by Larry @lyrra.
This repo contains scripts to build a docker image to install dependencies, build the dev-branch and run MuseScore in a container.
Build:
./buildRun:
./runYou may want to adjust docker run parameters such as mounts. The current directory is by default mounted to /data in the container.