Can I use hub.initContainers or hub.extraContainers to add packages that would then be visible to JupyterHub?

JupyterHub
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I’m having trouble grasping how using the JupyterHub Helm chart I would add some packages needed by something I’d like to reference in extraConfig. There is a reference to hub.extraContainers in https://z2jh.jupyter.org/en/latest/advanced.html#arbitrary-extra-code-and-configuration-in-jupyterhub-config-py but I can’t find an example from anywhere exactly explaining how this would work and whether this would perhaps help me solve the problem 'd like to ultimately solve: use the JWT authenticator that is not installed in the image that’s referenced in the jupyterhub helm chart).

Am I on the right track, or is it necessary for me to fork the Helm chart for my purposes?

Another possibility looks to be initContainers?

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Your best option is to build your own hub image, push it to a registry, and reference it in your config:
https://z2jh.jupyter.org/en/latest/reference.html#hub-image

You can see the Dockerfile for the default hub image here: https://github.com/jupyterhub/zero-to-jupyterhub-k8s/tree/master/images/hub

There’s no need to fork the chart.

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Thanks, this had gone past me in the docs, makes a lot of sense!

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I can confirm that setting a custom image worked like charm.

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