dotnet build runtime parameter does not work

root January 25, 2026

To reduce the size of our builds and docker images, we added the configuration to only build for linux, but..

The dotnet runtime parameter does not work GitHub issue #14281

dotnet build --runtime <RUNTIME_IDENTIFIER>

error NETSDK1134: Building a solution with a specific RuntimeIdentifier is not supported. If you would like to publish for a single RID, specifiy the RID at the individual project level instead.

As workaround, define a custom RuntimeIdentifier in Directory.Build.props, and pass it as parameter to each command.

<PropertyGroup>
    <RuntimeIdentifier Condition="'$(MyRuntimeIdentifier)' != ''">$(MyRuntimeIdentifier)</RuntimeIdentifier>
</PropertyGroup>

dotnet restore -p:MyRuntimeIdentifier=linux-x64
dotnet build -p:MyRuntimeIdentifier=linux-x64
dotnet publish App.csproj -p:MyRuntimeIdentifier=linux-x64

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