Comment (by Roland Haas):

I had a look at the container. It seems to have installed a couple of unexpected packages such as gromacs (https://packages.ubuntu.com/xenial/gromacs). My guess is (just trying this right now) that this is b/c gromacs is somehow recommend for a package. One can (and should) use the --no-install-recommends option to avoid this.

You are mixing things by having Ubuntu install the base python then using pip for others. Would it not be more consistent to use Ubuntu's ipython3-package for jupyter?

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2234/trouble-in-the-tutorial-server