@spreiste With the recent changes I am not sure how we can build binary version with Dedicated Server and Client support. I modified the InstalledEngineBuild.xml (which I’m sharing here) to add support for server/client targets and it did build the Engine but the problem was not being able to package the game in server target.
For the target rules not found error, the fix is easy. Simply copy UE4Server.Target.cs from your Github source (Engine\Source directory) to your binary build (Engine\Source directory).
PS: I posted a new thread requesting this feature here: Please allow us to create Rocket build with Dedicated Server and Client support. - Feedback for Unreal Engine team - Unreal Engine Forums
PPS: The InstalledEngineBuild.xml I’m sharing here only supports Win64 and Win32. I’ve stripped out all other platforms.
PPPS: You can check out this tool for creating binary UE4: [TOOL] Create your own binary build for your team - Engine Source & GitHub - Unreal Engine Forums