Ipywidgets Version auf 8.1.5 festgeschrieben, um JavaScript-Fehler zu verhindern.

Dockerfile

@@ -28,6 +28,7 @@ RUN apt-get install -y libopenmpi-dev
 USER jovyan
 RUN pip install --upgrade pip
 RUN pip install jupyter-server-proxy==4.4.0
+RUN pip install ipywidgets==8.1.5
 
 # Install 'nice to have lab extensions'
 #RUN pip install --upgrade jupyterlab