Hello Customer16824
When you publish your application, you can include appsettings.Production.json in your project and ASP.NET will automatically load it when environment variable is set to Production.
Name: ASPNETCORE_ENVIRONMENT
Value: Production
You can setup this environment variable via our Control panel:
Control panel -> Websites -> Manage -> Scripting -> Envirnment Variables
When this variable is setup to value "Production" your appsettings.Production.json will be used.
Best Regards
MonsterASP.NET team