# 1. Use an official Python runtime as a parent image
FROM python:3.10-slim

# 2. Set the working directory in the container
WORKDIR /code

# 3. Copy the dependencies file and install them
# This is done in a separate step to leverage Docker's layer caching.
# The dependencies will only be re-installed if requirements.txt changes.
COPY ./requirements.txt /code/requirements.txt
RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# 4. Copy the rest of the application's code into the container
COPY . /code/

# 5. Expose the port that the app will run on
# Hugging Face Spaces expect the app to listen on port 7860
EXPOSE 7860

# 6. Define the command to run your app
# This command starts the Uvicorn server which serves your FastAPI app.
# --host 0.0.0.0 makes the server accessible from outside the container.
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]