The following shows how to configure an app to use Gitlab as the update source, for Gear Lever 4.+. Please not that custom Gitlab instances are not supported fot the time being.
Let’s use https://gitlab.com/librewolf-community/browser/appimage as an example.
Repo URL
This should be the URL of the repo, without addiitonal parameters:
https://gitlab.com/librewolf-community/browser/appimage
Release file name
This should be the name of the file from the relases tab; you can use globe (*) patterns to indicate variables in the file name.
LibreWolf-*.x86_64.AppImage
Pay attention as may apps today have relases for x86_64 and arm64 platforms.