https://github.com/jupyterlab/jupyterlab_server
pip install jupyterlab_server
The application author creates a JupyterLab build on their machine
using the core JupyterLab application. They can then serve their
files by subclassing the LabServerApp with the appropriate
configuration and creating a Python entry point that launches the app.
git clone https://github.com/jupyterlab/jupyterlab_server.git
cd jupyterlab_server
pip install -e .