JupyterLab failed to build during plotly install

[phcarval]

Hello,

I have an issue when trying to build the Docker image. I had already built the same image about six months ago without any errors, on the same machine. Here are the commands I have used (which are basically the commands presented on the Readme) :
git clone https://github.com/iot-salzburg/gpu-jupyter/
git checkout origin/v1.4_cuda-11.0_ubuntu-20.04
./generateDockerfile.sh --python-only
docker build -t gpu-jupyter .build/
No modification was made to the original source code.

The following error appears during step 75/81 :

RuntimeError: JupyterLab failed to build
See the log file for details: [...]
The command 'bin/bash -o pipefail -c jupyter labextension install jupyterlab-plotly' returned a non-zero code: 1

The log file is unaccessible, since it is created within the container.

I have also made sure that my GPUs are accessible from within Docker containers.

Thank you in advance!