How to install nbextention in jupyterhub

JupyterHub Zero to JupyterHub on Kubernetes
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1

I manually wrote dockerfile for install nbextention on singleuser-sample
Dockerfile:
FROM jupyterhub/k8s-singleuser-sample:1.1.3
RUN pip install jupyter_contrib_nbextensions &&
pip install jupyter_nbextensions_configurator &&
jupyter contrib nbextension install --user &&
jupyter nbextensions_configurator enable --user
But it works fine as docker run single containter. But in k8s it pulls that image but nbetentions not display on tab

2

Hi, were you able to resolve this issue?