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