public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
    WebHost
        .CreateDefaultBuilder(args)
        .ConfigureAppConfiguration((context, config) =>
        {
            var settings = config.Build();

            // Connect to Azure App Configuration using the Connection String.
            config.AddAzureAppConfiguration(settings["ConnectionStrings:AppConfiguration"]);
        })
        .UseStartup<Startup>();