Remove labextension install of jupyterlab/server-proxy as it ships wi…

…th jupyter-server-proxy's python package as of JupyterLab 3.0

Remove labextension install of jupyterlab/server-proxy as it ships wi…

…th jupyter-server-proxy's python package as of JupyterLab 3.0

Set --allow-downgrades flag for GLIBC patch

fixes #6

Set workdir to /home/jovyan and install MATLAB Engine for Python

Set workdir to /home/jovyan and install MATLAB Engine for Python

Use MPM and publish to GHCR