added some more things to it (Git, nano, Jupyterlab Git extension, R,…

… IR-kernel) and set user to notebook user and set working directory to be where the user mounts volumes

Dockerfile

@@ -1,15 +1,41 @@
 FROM continuumio/miniconda3
 
+# Install Jupyter, JupterLab, R & the IRkernel
 RUN conda install -y --quiet \
     jupyter \
-    jupyterlab
+    jupyterlab \
+    nodejs \
+    r-base \
+    r-irkernel
+
+# Install JupyterLab Git Extension
+RUN pip install jupyterlab-git
+
+# Create working directory for mounting volumes
 RUN mkdir -p /opt/notebooks
 
+# Make port 8888 available for JupyterLab
 EXPOSE 8888
 
+# Change to root user to do some installation and configurations
 USER root
 
+# Install Git, the nano-tiny text editor and less (needed for R help)
+RUN apt-get update --yes && \
+    apt-get install --yes --no-install-recommends \
+    git
+    #nano-tiny \
+    #less
+
+# Copy JupyterLab start-up script into container
 COPY start-notebook.sh /usr/local/bin/
 
+# Change permission of startup script and execute it
 RUN chmod +x /usr/local/bin/start-notebook.sh
 ENTRYPOINT ["/usr/local/bin/start-notebook.sh"]
+
+# Switch to Jupyter user
+USER "1000"
+
+# Switch to staring in directory where volumes will be mounted
+WORKDIR "/opt/notebooks"