FROM python:3.11-slim

WORKDIR /app

# Install Python deps first (better Docker layer cache)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy app source
COPY . .

# HF Docker Spaces require a non-root user with UID 1000
RUN useradd -m -u 1000 user && chown -R user:user /app
USER user

EXPOSE 7860

CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]