Providing link for further information

Author: Maryam Ariyan

Documentation/building/unix-instructions.md

@@ -36,6 +36,8 @@ e.g. for Ubuntu 14.04, follow the steps below:
 
 Follow instructions on how to [install .NET Core SDK 2.0+ on Ubuntu](https://www.microsoft.com/net/learn/get-started/linux/ubuntu14-04).
 
+For more detailed info click [here](https://docs.microsoft.com/en-us/dotnet/core/linux-prerequisites?tabs=netcore2x).
+
 ### macOS
 
 macOS 10.12 or higher is needed to build dotnet/machinelearning.