FROM python:3.11-slim

# System deps for torch/prophet/sklearn
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc g++ git libgomp1 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install Python deps (prod-only, no dev/test/observability packages)
COPY requirements-prod.txt .
RUN pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu
RUN pip install --no-cache-dir -r requirements-prod.txt

COPY . .

# Train ML models at build time so startup is instant.
# If yfinance is rate-limited during build, training is skipped gracefully
# and the entrypoint will retry at runtime (fallback).
RUN python build_train.py || true

# HF Spaces requires port 7860
ENV PORT=7860
EXPOSE 7860

COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh
ENTRYPOINT ["/docker-entrypoint.sh"]