BuildWebHost with KeyVault and client credentials

BuildWebHost.cs

public static IWebHost BuildWebHost(string[] args) =>
    WebHost.CreateDefaultBuilder(args)
        .UseStartup<Startup>()
        .ConfigureAppConfiguration((builderContext, config) =>
        {
            var env = hostingContext.HostingEnvironment; 
            
            var builtConfig = config.Build();
            var vaultUrl = $"https://{buiItConfig["VaultName"]}.vault.azure.net/"; 
            if (env.IsDevelopment())
            {
                config.AddAzureKeyVault(vaultUrl); 
            } 
            else
            {
                config.AddAzureKeyVault(vaultUrl, builtConfig[ "clientld"], builtConfig["clientSecret"]);
            }
        });