I have installed the ArcGIS Notebook server according to documents. But I must have missed something. I need to login to the ArcGIS Notebook server in order to get Docker to start up. Then everything works alright. But if I don't I will get following error message when trying to start a Notebook in Portal for ArcGIS:
Error opening notebook. Unable to establish DockerClient environment: '{0}'.
Someone else facing the same problem?