FROM python:3.13-slim

# Keine .pyc-Dateien, ungepufferte Logs
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

WORKDIR /app

# Abhängigkeiten zuerst (bessere Layer-Caches)
COPY requirements.txt .
RUN pip install --upgrade pip && pip install -r requirements.txt

# Anwendungscode
COPY app ./app

# SQLite-Datenbank liegt im persistenten Volume /data
ENV DATABASE_URL=sqlite:////data/linkvault.db
RUN mkdir -p /data

# Nicht als root laufen
RUN useradd --create-home --uid 1000 appuser \
    && chown -R appuser:appuser /app /data
USER appuser

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD python -c "import urllib.request,sys; sys.exit(0 if urllib.request.urlopen('http://127.0.0.1:8000/login').status==200 else 1)"

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