PhysicalFileSystem to retrieve application base path from IApplicationEnvironment

[Praburaj]

GetFullRoot method in https://github.com/aspnet/FileSystem/blob/dev/src/Microsoft.AspNet.FileSystems/PhysicalFileSystem.cs seems to be retrieving the application base path from the AppDomain or Directory.CurrentDirectory(). Instead should we retrieve the application base path from IApplicationEnvironment.ApplicationBasePath.

[moonpeng]

what's the ApplicationContext's namespace? I con't find it with framework 4.0.

[davidfowl]

It only exists in core clr it's not on the full .NET framework