FROM python:3.10-slim

WORKDIR /app

# System dependencies for OpenCV + ffmpeg (video decoding)
RUN apt-get update && apt-get install -y --no-install-recommends \
    libgl1 \
    libglib2.0-0 \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

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

# App code
COPY . .

# HF Spaces requires apps to listen on port 7860
ENV PORT=7860
EXPOSE 7860

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