FROM python:3.12-slim AS builder
WORKDIR /build
ENV PIP_DISABLE_PIP_VERSION_CHECK=1
COPY pyproject.toml README.md ./
COPY app ./app
RUN python -m pip wheel --no-cache-dir --wheel-dir /wheels .

FROM python:3.12-slim
ENV PYTHONDONTWRITEBYTECODE=1 PYTHONUNBUFFERED=1
RUN addgroup --system app && adduser --system --ingroup app app
WORKDIR /app
COPY --from=builder /wheels /wheels
RUN python -m pip install --no-cache-dir /wheels/* && rm -rf /wheels
USER app
EXPOSE 8000
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/healthz', timeout=2)"
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1", "--no-access-log"]