Provides a Dockerfile which provides a full build environment for DXVK, and a make script to kick it off with.
Just run ./make-dxvk - the script will grab DXVK for you, give you the chance to provide a branch/tag/SHA, then build DXVK for you. Once it's done, it can install it into Lutris for you, as well.
Once installation has completed, just set your Lutris DXVK version to dxvk-master and you're running on the bleeding edge.