FROM python:3.11-slim

# Set workdir
WORKDIR /app

# Copy requirements trước để cache
COPY requirements.txt .

# Cài dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy toàn bộ code
COPY . .

# Expose port (HuggingFace cần lắng nghe ở $PORT)
ENV PORT=7860

# Run app với gunicorn
CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app"]