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Docker Customization

  1. The docker runs JupyterLab and GoNB under the user $NB_USER (== "jovyan").
  2. It has configured sudo privileges for apt update and apt install *. So a cell with !sudo apt install <my_package> will work, and install your package.
  3. One can always create another docker based on janpfeifer/gonb_jupyterlab@latest
  4. Create an autostart.sh script, see next section.

Customization with autostart.sh

If you readonly mount a file /root/autostart/autostart.sh with executable permissions, it will be executed at start up of the container by default as root.

This allows you to download/install databases, or set up credentials, etc.

Example of an autostart.sh that:

  • Sets the timezone
  • Installs nats for the jupyer user (given by $NB_USER).
# Set the German timezone (so time.Now() returns German time)
apt-get install -y tzdata
ln -sf /usr/share/zoneinfo/Europe/Berlin /etc/localtime

# some locale magic to make "date" answer with German format
echo 'de_DE.UTF-8 UTF-8' >> /etc/locale.gen
locale-gen
echo 'LC_ALL="de_DE.utf8"' > /etc/default/locale
export LC_ALL="de_DE.UTF-8"
dpkg-reconfigure locales

# check that it works
date

# Installing Go tools for $NB_USER.
su -l "$NB_USER" -c "go install github.com/nats-io/natscli/nats@latest"

More details in the Dockerfile and in the small start script cmd/check_and_run_autostart.sh.