FROM python:3.11-slim

# System deps: sentence-transformers/faiss build against these on
# some slim images; keep this minimal since there's no audio/ffmpeg
# requirement here (unlike Reem).
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install deps first so this layer is cached across code-only changes
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY app.py .

# HF Spaces Docker SDK expects the app on port 7860; if you deploy
# elsewhere (Railway, etc.) this still works, just map the port
# accordingly at `docker run -p <host>:7860`.
EXPOSE 7860

# GROQ_API_KEY must be injected at runtime (docker run -e GROQ_API_KEY=...
# or the platform's secrets manager) -- it is never baked into the image.
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]