# RAG_API_SECRET: set at runtime via HF Space "Repository secrets", not in this image.
# Backend must set the same value in RAG_API_SECRET for /query and /upload to work.

FROM python:3.11-slim

RUN useradd -m -u 1000 user

WORKDIR /app

# HF cache on ephemeral disk — bucket FS may not support symlinks needed by HF cache
ENV HF_HOME="/tmp/hf_cache"

# torch CPU-only (needed by sentence-transformers)
RUN pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu

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

COPY main.py conversation.py llm_client.py reranker.py guardrails.py .

RUN mkdir -p /data

EXPOSE 7860

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]