python relative import with docker and uvicorn

Question

I have a directory structure like this on the host (outside docker container):

docker_ml/
├── auth.conf
├── data_loader.py
├── db.py
├── docker-compose.yml
├── Dockerfile
├── Dockerfile2
├── __init__.py
├── ml
├── models.py

My Dockerfile has the important directives relative to this problem:

WORKDIR /project

And the docker compose this:

command:
  ["uvicorn", "ml:app", "--host", "0.0.0.0","--port","9001","--reload"]
volumes:
  - .:/project/ml

So essentially I am mounting a volume where of my application at /project/ml in the docker container and I run the command "uvicorn", "ml:app", "--host", "0.0.0.0","--port","9001","--reload" at the directory entrypoint which is /project.

The uvicorn servers starts fine but __init__.py has the following relative imports:

from .db import engine

And I get the following error:

ModuleNotFoundError: No module named 'db'

What am I doing wrong here ?