- Added the creation of the data directory

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