Building dotnet core for Raspberry PI: NU1605: Detected package downgrade

You can build a dotnet core app on a 64-bit Linux machine for running on a 32-bit Raspberry PI.

My dockerfile ran the following command (note the -r parameter):
RUN dotnet publish -c Release -o out -r linux-arm

I did get one error when building it though:

C:\Source Code\GitHub\buyers-remorse-containers\src\BuyersRemorseService\BuyersRemorseService\BuyersRemorseService.csproj : error NU1605: Detected package downgrade: Microsoft.Win32.Primitives from 4.3.0 to 4.0.1. Reference the package directly from the project to select a different version. C:\Source Code\GitHub\buyers-remorse-containers\src\BuyersRemorseService\BuyersRemorseService\BuyersRemorseService.csproj : error NU1605: BuyersRemorseService -> Microsoft.Azure.ServiceBus 2.0.0 -> Microsoft.Azure.Amqp 2.1.2 -> System.Net.WebSockets.Client 4.0.0 -> System.Net.Primitives 4.0.11 -> runtime.unix.System.Net.Primitives 4.3.0 -> Microsoft.Win32.Primitives (>= 4.3.0) C:\Source Code\GitHub\buyers-remorse-containers\src\BuyersRemorseService\BuyersRemorseService\BuyersRemorseService.csproj : error NU1605: BuyersRemorseService -> Microsoft.Win32.Primitives (>= 4.0.1)

And the solution was to edit the .csproj and manually insert the following line:

<PackageReference Include="Microsoft.Win32.Primitives" Version="4.3.0" />