FROM python:3.11-slim AS builder
WORKDIR /app
COPY backend/requirements.txt .
RUN pip install --no-cache-dir --user -r requirements.txt

FROM python:3.11-slim AS runtime
WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    libglib2.0-0 libsm6 libxext6 libxrender-dev libgl1 curl \
    && rm -rf /var/lib/apt/lists/*

RUN useradd -m -u 1000 appuser

COPY --from=builder --chown=appuser:appuser /root/.local /home/appuser/.local
ENV PATH=/home/appuser/.local/bin:$PATH

COPY --chown=appuser:appuser backend/app/ ./app/

USER appuser

EXPOSE 7860

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "2"]