FROM python:3.12-slim AS builder
WORKDIR /app
COPY shared/ shared/
RUN pip install --no-cache-dir ./shared
COPY services/backtester/ services/backtester/
RUN pip install --no-cache-dir ./services/backtester

FROM python:3.12-slim
RUN useradd -r -s /bin/false appuser
WORKDIR /app
COPY --from=builder /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin
COPY services/strategy-engine/strategies/ /app/strategies/
ENV STRATEGIES_DIR=/app/strategies
ENV PYTHONPATH=/app
USER appuser
CMD ["python", "-m", "backtester.main"]