FROM python:3.12-slim

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt \
    --extra-index-url https://download.pytorch.org/whl/cpu

COPY app.py .

# Writable cache for the model download (Spaces run as non-root uid 1000)
ENV HF_HOME=/tmp/hf

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