Although using NavContainerHelper makes it very easy to sign your Business Central applications, you do not have to use it. As an alternative, you could install Microsoft SignTool yourself, load your code signing certificate, and then use SignTool to sign the file. None of this actually requires a container.

You can read more about using Microsoft SignTool at https://docs.microsoft.com/en-us/dotnet/framework/tools/signtool-exe.

Microsoft Sign Tool can be installed as part of Visual Studio Code, or it can be installed as part of the Windows SDK, which you can install from https://go.microsoft.com/fwlink/p/?LinkID=2023014.