Merge pull request #1 from lmoran/master

Corrected some bugs that prevented the image to be built or run

jupyterlab/Dockerfile

@@ -37,4 +37,5 @@ RUN pip install -r requirements.txt
 
 # Expose Jupyter port & cmd
 EXPOSE 8888
+RUN mkdir -p /opt/app/data
 CMD jupyter lab --ip=* --port=8888 --no-browser --notebook-dir=/opt/app/data

jupyterlab/requirements.txt

@@ -1,3 +1,4 @@
+cython
 numpy
 pandas
 matplotlib