message: git is required by several tutorial examples
diff: @@ -7,6 +7,8 @@ RUN jupyter serverextension enable --py jupyter_http_over_ws
  RUN mkdir -p /tf/tensorflow-tutorials && chmod -R a+rwx /tf/
  RUN mkdir /.local && chmod a+rwx /.local
  RUN apt-get install -y --no-install-recommends wget
  +# some examples require git to fetch dependencies
  +RUN apt-get install -y --no-install-recommends git
  WORKDIR /tf/tensorflow-tutorials
  RUN wget https://raw.githubusercontent.com/tensorflow/docs/master/site/en/tutorials/keras/classification.ipynb
  RUN wget https://raw.githubusercontent.com/tensorflow/docs/master/site/en/tutorials/keras/overfit_and_underfit.ipynb
  