FROM python:3.12-slim

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

COPY main.py .

# Utente non-root con privilegi minimi (best practice container)
RUN useradd --create-home --uid 10001 appuser
USER appuser

# Pre-download del modello sparso BM25 (cache in /home/appuser/.cache/fastembed)
RUN python -c "from fastembed import SparseTextEmbedding; SparseTextEmbedding(model_name='Qdrant/bm25')"

EXPOSE 8080
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8080"]