[FB 8.6.3666] dotnet publish is missing portable target runtime

VS 2026 supports a target runtime “portable” setting for publishing framework dependent .Net 10 code. In fact, this setting removes the RuntimeIdentifier from the publish profile.

I can’t use the FB dotnet publish action to replicate this. FB dotnet publish has no entry for “portable” and always forces a specific target runtime.

Please add this setting in FB!

Please ignore this – I’ve just realised that the runtime property can be cleared.