FROM python:3.11-slim

# ─── system deps ──────────────────────────────────────────
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential \
        curl \
    && rm -rf /var/lib/apt/lists/*

# ─── CPU-thread env (torch will auto-detect, but this helps MKL/OMP) ──
ENV OMP_NUM_THREADS=4
ENV MKL_NUM_THREADS=4
ENV TOKENIZERS_PARALLELISM=false
ENV HF_HOME=/app/.hf_cache
ENV TRANSFORMERS_CACHE=/app/.hf_cache

WORKDIR /app

# ─── Python deps ──────────────────────────────────────────
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# ─── app code ─────────────────────────────────────────────
COPY app.py .
COPY static/ static/

EXPOSE 7860
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]