Anyone know why the docs for customizing the single user image state that the image name has to be under 63 characters? https://zero-to-jupyterhub.readthedocs.io/en/latest/customizing/user-environment.html#choose-and-use-an-existing-docker-image
If you are pulling from a private docker repo on AWS, it is pretty easy to breach that limit. For example,
<account_id_here>.dkr.ecr.us-east-1.amazonaws.com/something is 60 characters.