FROM python:3.11-slim

WORKDIR /app

# HF Spaces roda como usuário não-root; caches devem ir para /tmp.
ENV PORT=7860 \
    CHROMA_PERSIST_DIR=/tmp/chroma_db \
    HF_HOME=/tmp/hf_home \
    TRANSFORMERS_CACHE=/tmp/hf_home \
    SENTENCE_TRANSFORMERS_HOME=/tmp/hf_home \
    XDG_CACHE_HOME=/tmp/cache \
    PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1

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

COPY . .

EXPOSE 7860

CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT}"]