How to run a shell command in container when it was created?

[qxu...@gmail.com]

My jupyterhub runs under single-user mode. Every user has a container running jupyter notebook. I need to exec a shell command when the container starts up. 

There might be so configuration in jupyterhub_config.py.

like:

#jupyterhub_config.py
c = get_config()
...
c.DockerSpawner

在此输入代码...

But I don't know exactly what the keys are. 

Thanks in advance!

[MinRK]

You can modify the command in your Dockerfile, e.g.

FROM jupyter/scipy-notebook:c8797824e8c0
ADD preflight.sh
CMD ['preflight.sh']

where preflight.sh is something like:

#!/usr/bin/env bash
echo 'hello! I'm about to start'

# your setup code here

# your script should end with this:
exec jupyterhub-singleuser $@

-Min

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[qxu...@gmail.com]

thank you!