Dockerfile

# Stage 1: Build
FROM python:3.12-slim AS builder

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

WORKDIR /build

RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --target=/build/deps -r requirements.txt

# Stage 2: Production
FROM python:3.12-slim AS production

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PYTHONPATH=/app/deps \
    HOST=0.0.0.0 \
    PORT=8080 \
    ENVIRONMENT=production

RUN groupadd --gid 1000 appgroup && \
    useradd --uid 1000 --gid appgroup --shell /bin/bash --create-home appuser

WORKDIR /app

COPY --from=builder /build/deps /app/deps
COPY --chown=appuser:appgroup src/ /app/

USER appuser
EXPOSE 8080

HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8080/health')" || exit 1

CMD ["python", "-m", "uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8080", "--proxy-headers", "--forwarded-allow-ips", "*"]