FROM python:3.9-slim

# 1. Install system dependencies for OpenCV
RUN apt-get update && apt-get install -y \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

# 2. Set up a non-root user for Hugging Face Spaces
RUN useradd -m -u 1000 user
WORKDIR /app
RUN chown user:user /app

USER user
ENV PATH="/home/user/.local/bin:$PATH"

# 3. Install Python dependencies
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir --user -r requirements.txt

# 4. PRE-DOWNLOAD THE MODEL (This prevents the "stuck" build/startup)
RUN python -c "from ultralytics import YOLO; YOLO('yolov8n-pose.pt')"

# 5. Copy the app code
COPY --chown=user app.py .

EXPOSE 7860

CMD ["python", "app.py"]