Why is the Jupyter Lab container not working?#

Jupyter Lab starts as a web server in the container which listens on port 8805. This port needs to be mapped to a port on the local computer; per default also port 8805 is used. Mapping fails if the port is used by another service. To solve this, map to another port when starting the container, e.g. -p 8806:8805 to map from 8805 in the container to 8806.