Dockerfile

FROM python:3.11-slim AS builder

WORKDIR /app

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

FROM python:3.11-slim

WORKDIR /app

# Copy installed packages from builder
COPY --from=builder /usr/local/lib/python3.11/site-packages /usr/local/lib/python3.11/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# Create non-root user
RUN addgroup --system app && adduser --system --ingroup app app && \
    mkdir -p /app/data /app/templates && \
    chown -R app:app /app

COPY --chown=app:app . .

USER app

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --retries=3 --start-period=10s \
    CMD python -c "import httpx; httpx.get('http://localhost:8000/health').raise_for_status()" || exit 1

CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1"]