dotnet/sdk/8.0.402/testhost-latest.runtimeconfig.json

{
  "runtimeOptions": {
    "tfm": "netcoreapp1.0",
    "rollForward": "latestMajor",
    "framework": {
      "name": "Microsoft.NETCore.App",
      "version": "8.0.8"
    }
  }
}