I'm not in the Microsoft stack so I have no idea how much SQL Server and SQL Server Express are compatible. I only know they exist.

The README requires SQL Server so I might be excused thinking that it would work only with that software. Nice to know that it does work on the free version too. I googled and looked on MS site and didn't find out if SQL Server Express exists for Linux too, but I'm on my phone right now. I only managed to involuntarily download a .exe :-)