FROM python:3.11-slim

# Non-root user for HF Spaces
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONUNBUFFERED=1 \
    GRADIO_SERVER_NAME=0.0.0.0 \
    GRADIO_SERVER_PORT=7860 \
    HF_HOME=/home/user/.cache/huggingface

WORKDIR /home/user/app

# CPU-only torch from PyTorch index (skip CUDA wheels, ~200MB vs ~2GB)
RUN pip install --user --no-cache-dir --index-url https://download.pytorch.org/whl/cpu \
    torch==2.6.0

# App deps — all pinned to known-compatible versions
RUN pip install --user --no-cache-dir \
    "gradio[mcp]==5.30.0" \
    "huggingface_hub>=0.27.0,<1.0" \
    "numpy>=1.26,<2.3" \
    "pandas>=2.1" \
    "yfinance>=0.2.50" \
    "curl_cffi>=0.7" \
    "websockets>=13.0" \
    "einops>=0.7" \
    "safetensors>=0.4" \
    "tqdm>=4.66" \
    "transformers>=4.40,<5.0" \
    "chronos-forecasting>=1.5.2" \
    "timesfm[torch]>=1.3.0"

COPY --chown=user . /home/user/app

EXPOSE 7860
CMD ["python", "app.py"]