nuget - runtime.osx.10.10-x64.CoreCompat.System.Drawing does not show up in the output when publishing -

why 1 nuget package missing?

i have project nuget packages
corecompat.system.drawing,
runtime.osx.10.10-x64.corecompat.system.drawing and
runtime.linux-x64.corecompat.system.drawing.

when have done

dotnet restore  dotnet build  dotnet publish -c release  

sequence
both corecompat.system.drawing , runtime.linux-x64.corecompat.system.drawing show in output.

runtime.osx.10.10-x64.corecompat.system.drawing found.