hello-shop/samples/GarnetWindowsService/GarnetWindowsService/Properties/launchSettings.json

{
  "$schema": "http://json.schemastore.org/launchsettings.json",
  "profiles": {
    "GarnetWindowsService": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "environmentVariables": {
        "DOTNET_ENVIRONMENT": "Development"
      }
    }
  }
}