How to use the shared layout with the swagger UI (ASP CORE)

Question

I'm using swagger to make a documentation to my API in ASP.NET Core.

And, I would like to use the shared layout to get the same menu on the top of the documentation page.

I would love to do it without re-creating a custom css file, like the documentation says.

I just hope that someone though the same as me, and I was wondering how.

Thanks in advance,