Application logging not working

[nickwalkmsft]

From aspnet/Logging#564:

I'm running a dotnetcore 1.1 based api in a docker container on azure. When I activate "Application Logging (Blob)" under "Diagnostics logs" in the azure portal my application crashes with the following exception:

Unhandled Exception: System.ArgumentNullException: Value cannot be null.
Parameter name: instanceId
at Microsoft.Extensions.Logging.AzureAppServices.Internal.AzureBlobLoggerProvider..ctor(String outputTemplate, String appName, String instanceId, String fileName, Int32 batchSize, Int32 backgroundQueueSize, TimeSpan period)
at Microsoft.Extensions.Logging.AzureAppServices.Internal.AzureAppServicesDiagnosticsLoggerProvider..ctor(WebAppContext context, AzureAppServicesDiagnosticsSettings settings)
at Microsoft.Extensions.Logging.AzureAppServicesLoggerFactoryExtensions.AddAzureWebAppDiagnostics(ILoggerFactory factory, AzureAppServicesDiagnosticsSettings settings)

I'm using the Microsoft.Extensions.Logging.AzureAppServices 1.0.0 package from nuget.
Are azure App Services on Linux already supported by Microsoft.Extensions.Logging.AzureAppServices?