How to reset PATH enviroment variable

JupyterHub Zero to JupyterHub on Kubernetes
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Hello World,

I have been using jupyterhub on Kubernetes with a custom image (for singleuser) and following zero to jupyterhub guide. in my custom image, I set the PATH environment variable but then when I echo it in a terminal within my notebooks the value is something different. Then googling I found this option

 singleuser:
    extraEnv:
       PATH: /home/jovyan/.local/bin:/usr/local/spark/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

for the values.yaml when deploying the helm chart.

then I can describe the pod where my notebooks are running and I can see that the PATH is passed to the pod, but when I echo it, I get the wrong value.

does anybody know how to solve this?