Docker container dolfinx/lab does not contain FEniCSx

I installed FEniCSx on a Windows host via the recommended way:

docker pull dolfinx/lab
docker run -p 8888:8888 dolfinx/lab

When I create a new notebook script and try to import fenics or dolphin, I get the following error:

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Input In [2], in <cell line: 1>()
----> 1 import fenics

ModuleNotFoundError: No module named ‘fenics’

I thought the whole fenics enviroment should be set up in the docker container. What am I doing wrong?

Dolfinx is the development version of the fenics project, and the Python package is called `dolfinx’ as shown in: GitHub - FEniCS/dolfinx: Next generation FEniCS problem solving environment
and The FEniCSx tutorial — FEniCSx tutorial