FROM python:3.11-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    HF_HOME=/tmp/hf-cache \
    OMP_NUM_THREADS=2

RUN apt-get update && apt-get install -y --no-install-recommends \
    libsndfile1 ffmpeg libgomp1 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /home/user/app

# Install compatible CPU versions of PyTorch and TorchVision
RUN pip install --no-cache-dir \
    --index-url https://download.pytorch.org/whl/cpu \
    torch==2.9.0 torchvision==0.24.0

COPY requirements.txt ./

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

# Verify TorchVision loads correctly
RUN python -c "import torch, torchvision; from torchvision.transforms.v2 import functional; print('Dependencies OK')"

RUN useradd --create-home --uid 1000 user

COPY --chown=user:user . .

USER user

EXPOSE 7860

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