read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
you will also find guides on how best to write your Dockerfile
FROM python:3.9
WORKDIR /code
COPY ./requirements.txt /code/requirements.txt
RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
COPY . .
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860"]