FROM python:3.10-slim

# System deps (important for pdf parsing stability)
RUN apt-get update && apt-get install -y \
    build-essential \
    libxml2 \
    libxslt1-dev \
    zlib1g-dev \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Install Python deps first (better caching)
COPY requirements.txt .

RUN pip install --no-cache-dir -r requirements.txt

# Copy app
COPY . .

# Expose FastAPI port
EXPOSE 7860

# Run app (HF Spaces expects port 7860)
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]