FROM python:3.12-slim

WORKDIR /app

# CPU-only torch wheel keeps the image small; HF Spaces free tier is CPU-only.
RUN pip install --no-cache-dir torch==2.13.0 --index-url https://download.pytorch.org/whl/cpu

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

COPY . .

# Both models decode in parallel threads; one intra-op thread each (see app).
ENV OMP_NUM_THREADS=1
ENV MKL_NUM_THREADS=1

# HF Spaces expects the app to listen on this port (see README.md app_port).
ENV PORT=7860
EXPOSE 7860

CMD ["python3", "sow_space_app.py"]