Finalized Jupyterlab for the sprint

Dockerfile

@@ -14,5 +14,9 @@ RUN pip install jupyter-server-proxy==4.0.0
 RUN pip install jupyterlab-git==0.42.0
 RUN pip install jupyterlab-gitlab==3.0.0
 
+# Install jupyterlab-dash
+RUN jupyter labextension install jupyterlab-dash
+
+# Copy and install additional Python packages
 COPY requirements.txt requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt