FROM python:3.11-slim

WORKDIR /app

# System dependencies
RUN apt-get update && apt-get install -y \
    git \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Install Python dependencies
COPY backend/requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend source
COPY backend/ ./backend/

# HF Spaces requires port 7860
ENV PORT=7860
ENV PYTHONPATH=/app/backend

# Model weights are loaded and cached dynamically at runtime to keep builds fast and stable.

WORKDIR /app/backend

# Run the FastAPI server
CMD ["uvicorn", "server:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]