requirements.txt not installed on container startup: permission denied

[sandermarechal]

What happened?

The documentation says that I should be able to add a requirements.txt to add extra python packages. But when I attempt to do so, I get "Permission denied" errors.

Do I need to add other volumes to the container?

Version

4.5.13

Installation type

Docker container

Relevant log output

[notice] A new release of pip is available: 25.0.1 -> 26.1.2
[notice] To update, run: pip install --upgrade pip
...
WARNING: The directory '/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you should use sudo's -H flag.
Defaulting to user installation because normal site-packages is not writeable
...
Installing collected packages: requests, pycparser, pyasn1, protobuf, grpcio, pyasn1-modules, proto-plus, googleapis-common-protos, cffi, grpcio-status, cryptography, google-auth, google-api-core, google-geo-type, google-maps-routing
ERROR: Could not install packages due to an OSError: [Errno 13] Permission denied: '/.local'
Check the permissions.

Relevant code in the app or config file that caused the issue

# requirements.txt
google-maps-routing

Anything else?

No response