Providing link for further information

Author: Maryam Ariyan

Documentation/building/unix-instructions.md

@@ -34,7 +34,17 @@ e.g. for Ubuntu 14.04, follow the steps below:
 
 `sudo apt-get install git clang-3.9 cmake libunwind8 curl`
 
-Follow instructions on how to [install .NET Core SDK 2.0+ on Ubuntu](https://www.microsoft.com/net/learn/get-started/linux/ubuntu14-04).
+Follow instructions on how to [install .NET Core SDK 2.0+ on Ubuntu](https://www.microsoft.com/net/learn/get-started/linux/ubuntu14-04):
+
+`#Register Microsoft key and feed`
+`wget -q packages-microsoft-prod.deb https://packages.microsoft.com/config/ubuntu/14.04/packages-microsoft-prod.deb`
+`sudo dpkg -i packages-microsoft-prod.deb`
+`#Install the SDK`
+`sudo apt-get install apt-transport-https`
+`sudo apt-get update`
+`sudo apt-get install dotnet-sdk-2.1.105`
+
+For more detailed info click [here](https://docs.microsoft.com/en-us/dotnet/core/linux-prerequisites?tabs=netcore2x).
 
 ### macOS