FROM python:3.10-slim

ENV DEBIAN_FRONTEND=noninteractive \
    PYTHONUNBUFFERED=1 \
    PORT=7860 \
    HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Install essential system dependencies for OpenCV, PaddleOCR, PDF rendering
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libgl1 \
    libglib2.0-0 \
    libgomp1 \
    poppler-utils \
    tesseract-ocr \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

# Create standard non-root user (UID 1000 required for Hugging Face Spaces)
RUN useradd -m -u 1000 user
USER user
WORKDIR /home/user/app

# Install Python dependencies
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir -U pip setuptools wheel && \
    pip install --no-cache-dir -r requirements.txt

# Copy application files
COPY --chown=user . .

# Expose standard Hugging Face Space port
EXPOSE 7860

# Run FastAPI server
CMD ["python", "server.py", "--host", "0.0.0.0", "--port", "7860"]