It appears that Fortify SCA (v20.1.2) doesn't support building with the dotnet.exe build tool, which I believe is required for building .NET Core applications. MSbuild won't build the .NET Core application.
If I use scanwizard to create a script, using the MSBuild flag results in a failure. However, not using the MSBuild flag treats the application as .NET Framework and not .NET Core.
What is the proper way to scan a .NET Core application?