This repository is for providing automated builds of DOSBox ECE that run on a wide variety of Linux distributions without the need to install any of the normally required libraries (like FluidSynth 1.x or SDL 1.2.)
To use these builds, simply mark the downloaded AppImage file as executable and run it. On Ubuntu 22.04 or other very recent Linux distros, you need to install libfuse2:
sudo apt-get install libfuse2
This annoyance will hopefully be fixed in the future. The AppImage devs are working on it.