FROM python:3.11-slim

RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    HF_HOME=/home/user/.cache/huggingface
WORKDIR /home/user/app

# CPU-only torch keeps the image small (no CUDA libraries)
RUN pip install --no-cache-dir --user torch==2.5.1 --index-url https://download.pytorch.org/whl/cpu
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --user -r requirements.txt

COPY --chown=user . .

EXPOSE 7860
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0", "--server.headless=true"]