How can C# use a legacy DLL simply without registration(regsvr32)

Question

Situation
I run a build system that executes many builds for many project. To avoid one build impacting another we lock down the build user to only its

Answer 1

Installation tools such as Installshield can extract the COM interfaces from the DLLs and add them to the registry. It can also use the self-registration process of the DLL (which I believe is what regsvr does), but this is not a Microsoft installer best practice.