FROM python:3.11-slim

# Prevents Python from writing .pyc files and buffering stdout/stderr
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

WORKDIR /app

# System deps for lightgbm, xgboost, catboost (build and runtime)
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential \
        libgomp1 \
        curl \
        git \
    && rm -rf /var/lib/apt/lists/*

# Copy dependency list and install
COPY requirements.txt /app/requirements.txt
RUN pip install --upgrade pip \
    && pip install -r requirements.txt

# Copy optimization scripts
COPY improve_models.py /app/improve_models.py
COPY feature_importance_analysis.py /app/feature_importance_analysis.py
COPY compare_models.py /app/compare_models.py

# Copy data directory (will be mounted as volume, but include for reference)
RUN mkdir -p /app/content/models /app/content/reports

# Default command: run optimization
CMD ["python", "improve_models.py"]