FROM python:3.10-slim

WORKDIR /app

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

# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy all source
COPY . .

ENV PYTHONPATH="/app:/app/engines"
ENV HF_SPACE="1"

# Numba JIT disk cache — persists compiled kernels within the container
# lifecycle so only the first warmup pays compilation cost.
ENV NUMBA_CACHE_DIR="/tmp/numba_cache"

EXPOSE 7860

CMD ["python", "app.py"]