How Do I force Omnisharp/Roslyn to target Linux

[CodeSwimBikeRunner]

I am working on a windows host with VSCode, .net core 2.2.

I am running Docker for Desktop and my images are alpine. So my running containers are using
dotnet watch -r alpine-x64 my local filesystem is mounted into the container so that any file changes will be picked up.

When I attach to the container process that allows me to debug my application. Intellisense in VSCode shows everything as red, when infact everything is fine. I believe its because Omnisharp/roslyn (I'm not sure who would be responsible) is working with the bin/obj folder that is compiled for alpine-x64. But there is a disconnect because my host system would obviously be win10.

[CodeSwimBikeRunner]

are more details needed?

[filipw]

This is a duplicate of dotnet/vscode-csharp#3621