FROM pytorch/pytorch:2.5.1-cuda12.1-cudnn9-runtime

# System deps
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential git curl ca-certificates \
 && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# HF cache — writable directory inside container
ENV HF_HOME=/app/.cache/huggingface \
    TRANSFORMERS_CACHE=/app/.cache/huggingface \
    HF_HUB_ENABLE_HF_TRANSFER=1 \
    PYTHONUNBUFFERED=1

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

# Pre-create HF cache dir (HF Spaces are read-only by default; this is writable)
RUN mkdir -p /app/.cache/huggingface && chmod -R 777 /app/.cache

COPY app.py .

EXPOSE 7860

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