private static CloudBlobContainer GetCloudBlobContainer(IConfiguration configuration)
        {
            var account = CloudStorageAccount.Parse(configuration.Get<AppSettings>().ConnectionStrings.StorageConnectionString);
            var cloudBlobClient = account.CreateCloudBlobClient();
            var container = cloudBlobClient.GetContainerReference("dpapi");
            container.CreateIfNotExistsAsync().Wait();
            return container;
        }

services
                .AddDataProtection()
                .PersistKeysToAzureBlobStorage(GetCloudBlobContainer(configuration), "keys.xml")