Dockerfile

# ── Stage 1: install dependencies ──────────────────────────────────────────
FROM python:3.12-slim AS builder

WORKDIR /build
COPY requirements.txt .
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt


# ── Stage 2: runtime image ──────────────────────────────────────────────────
FROM python:3.12-slim

WORKDIR /app

# Non-root user for security
RUN useradd --create-home --shell /bin/bash appuser

COPY --from=builder /install /usr/local

COPY app/ ./app/
COPY migrations/ ./migrations/

USER appuser
EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/api/v1/health')"

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