You can see at https://github.com/dotnet/try how to install it .
Or ,to use in Docker, check my files to install in Docker https://github.com/ignatandrei/Presentations/tree/master/2019/shorts/NetCoreGlobalTools/dotnetTry . To edit files in Docker, use Visual Studio Code with Docker and Remote Development and Docker extension.
To see in action on the web, check out Noda Time or
( for the moment is in preview, but it will work with GitHub and blogs…)