# =========================================================================
# DocuLens — Hugging Face Spaces Dockerfile
# =========================================================================
# Docker-based HF Space.  Port 7860 is the HF Spaces default.
# HF free-tier Spaces get 2 vCPU / 16 GB RAM — much better than Render
# free tier for CPU-bound JSON serialisation of large base64 payloads.
# =========================================================================

FROM python:3.11-slim

# --- System dependencies --------------------------------------------------
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        tesseract-ocr \
        libglib2.0-0 \
        libgl1 \
        ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# --- Python dependencies --------------------------------------------------
WORKDIR /app

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

# --- Application code ------------------------------------------------------
COPY . .

# --- Runtime ---------------------------------------------------------------
# HF Spaces expects port 7860 by default.
# Run as non-root for security (HF Spaces requires uid 1000).
RUN useradd -m -u 1000 appuser
USER appuser

ENV PORT=7860
EXPOSE 7860

CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT}"]