dotnet core building application for linux on a window

We can build a dotnet core application and target it to run on linux. Say your application is deployed on a linux container and you wanted to run additional testing on it, you can build your dotnet app to run on linux by simply running.

dotnet build --runtime linux-x64

Then run it with

dotnet my-dotnet-core-app.dll

If you get this error "Building a solution with a specific RuntimeIdentifier is not supported. If you

 would like to publish for a single RID,"

Then you can try to use the following command to redo the build 

dotnet build MySolution.sln -p:MyRuntimeIdentifier=linux-x64

If