Addresses https://github.com/aspnet/Docs/issues/7353
Adds `ms.prod` (with a value of `aspnet-framework`) to the ASP.NET conceptual docset's *docfx.json* file. Removes `ms.prod` from the individual docs.
Fix dockerfile example to work with latest microsoft/aspnet version.
This is the minimal change, there are other ways to get the content in the correct place. The latest aspnet docs use a `site_root` argument when creating the image. See https://github.com/Microsoft/aspnet-docker/blob/master/4.6.2/sample/Dockerfile
Scott Addie
Valentine Zavrak
Luke Latham
Luke Latham
Lex Li
Andre Price
Andy Pasic
Steve Lasker
Shayne Boyer