Description of problem:

When specifying the registry port of a registry, the custom notebook is unable to pull the image. "ImagepullBackoff"

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Create an image stream in the redhat-ods-applications namespace with customizations based on an existing notebook like minimal python.
2. Use the dashboard gui to import that image using its url. Something like "image-registry.openshift-image-registry.svc:5000/redhat-ods-applications/djw-custom-notebook"

1. Create a new notebook using the newly imported image.
2. Event log will show " [Warning] Error: InvalidImageName" and the notebook will not startup.

Actual results:

Notebook hangs with InvalidImageName

Expected results:

New notebook should startup with custom image.

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

Workaround:

Additional info: