Dockerfile

FROM python:3.11-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (layer cache)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy project
COPY . .

# Create non-root user (HF Spaces best practice)
RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser

# Environment variables
ENV PORT=7860
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:${PORT}/health || exit 1

EXPOSE 7860

CMD ["python", "-m", "uvicorn", "api.server:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]