Cake.Recipe has three different entry points. At the end of the recipe.cake file you can either run:
Build.Run();
which will execute the Cake.Recipe steps including executing MSBuild, and .Net Framework unit testing libraries such as Xunit, and NUnit.
Build.RunDotNetCore();
which will execute the Cake.Recipe steps including executing dotnet build, and dotnet test.
Build.RunNuGet();
which will execute the Cake.Recipe steps without any compilation steps, but rather executing only nuget pack.