Dockerfile

# Build stage
FROM python:3.11-slim as builder

WORKDIR /app

RUN apt-get update && apt-get install -y \
    gcc \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --no-cache-dir --user -r requirements.txt

# Production stage
FROM python:3.11-slim

WORKDIR /app

RUN apt-get update && apt-get install -y \
    curl \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

RUN useradd --create-home --shell /bin/bash --user-group app

COPY --from=builder /root/.local /home/app/.local

COPY server.py .

RUN chown -R app:app /app /home/app/.local

USER app

ENV PATH=/home/app/.local/bin:$PATH

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

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