Install Badlion Client on Linux Debian?

I saw that the BadlionClient is now also available for Linux. Unfortunately I don't understand how I should start Minecraft with Badlion, with Labymod you simply have a jar file and can then install it in minecraft with the appropriate command, but when I downloaded the Badlion client, I noticed that it wasn't jar file was and otherwise I have not found anything about whether and if so which command is needed.

This is an app image. You have to make that executable first. Then you can start it with a double click.