Missing step for pushing docker image

[fayalalebrun]

Bug Report

Current Behavior
When attempting to push the fltk docker image with a clean gcloud installation, there is an error related to authentication.

Expected behavior/code
The docker image should be pushed successfully.

Environment

• OS: Manjaro Linux
• Google Cloud SDK 401.0.0
• alpha 2022.09.03
• beta 2022.09.03
• bq 2.0.75
• bundled-python3-unix 3.9.12
• core 2022.09.03
• gcloud-crc32c 1.0.0
• gsutil 5.12

Possible Solution
Instruct the user to run the command gcloud auth configure-docker before pushing the image.

[JMGaljaard]

Hi @fayalalebrun, that has indeed gone under the radar, this was documented in the (old) setup https://github.com/JMGaljaard/fltk-testbed/wiki/Deployment#creating-a-gke-cluster, but must be added to the notebook. I will update this in an upcoming release