pip install in user location inside Docker to use pip sync in the container

[ghurault]

It does not work for now since Python packages are installed in the global installation folder (unless we use sudo).

[ghurault]

I tried the solution here without success: https://github.com/devcontainers/images/tree/main/src/python#optional-allowing-the-non-root-vscode-user-to-pip-install-globally-without-sudo