FROM python:3.11-slim

# Set up a clean working directory
WORKDIR /code

# Copy requirements file first to take advantage of Docker layer caching
COPY ./requirements.txt /code/requirements.txt

# Install dependencies cleanly
RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# Set up user privileges required by Hugging Face Spaces environment execution restrictions
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Set up application working folder path configurations
WORKDIR $HOME/app

# Copy the rest of your application code into the container
COPY --chown=user . $HOME/app

# Expose port 7860 as required natively by Hugging Face routing layers
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]