# Use official Python 3.12 slim image for a smaller footprint
FROM python:3.12-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Create a non-root user for Hugging Face Spaces security
RUN useradd -m -u 1000 user

# Set the working directory
WORKDIR /app

# Install system dependencies (needed for FAISS and compiling some ML packages)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libomp-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy the requirements file and install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy the entire project directory into the container
# Ensure large unused raw data is ignored via .dockerignore
COPY --chown=user:user . /app

# Switch to the non-root user
USER user

# Expose port 7860 which is required by Hugging Face Spaces
EXPOSE 7860

# Launch the FastAPI app via Uvicorn
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]