Update Dockerfile

Dockerfile

@@ -85,9 +85,8 @@ USER user
 
 # Python packages
 RUN --mount=target=requirements.txt,source=requirements.txt \
-    pip install --no-cache-dir --upgrade -r requirements.txt \
-    jupyter labextension install @krassowski/jupyterlab-lsp
-
+    pip install --no-cache-dir --upgrade -r requirements.txt 
+RUN jupyter labextension install @krassowski/jupyterlab-lsp
 
 # Copy the current directory contents into the container at $HOME/app setting the owner to the user
 COPY --chown=user . $HOME/app