FROM python:3.11-slim

# Install system-level libraries required by opencv-python-headless
RUN apt-get update && apt-get install -y \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install Python dependencies first (layer-cacheable)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Ensure the model directory exists (weights are uploaded separately on HF Spaces)
RUN mkdir -p model

# Hugging Face Spaces expects the service on port 7860
EXPOSE 7860

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