FROM python:3.12-slim

# Install system dependencies #
RUN apt-get update && apt-get install -y \
    build-essential \
    cmake \
    pkg-config \
    python3-dev \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user
RUN useradd -m -u 1000 user
WORKDIR /app

# Set environment
ENV HOME=/home/user
ENV PATH="$HOME/.local/bin:$PATH"

# Copy requirements and install Python packages as user
COPY --chown=user requirements.txt /app/requirements.txt
USER user

RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r /app/requirements.txt

# Copy application code
COPY --chown=user src/ /app/src/

# Expose Streamlit port
EXPOSE 8501

# Health check
HEALTHCHECK --interval=30s --timeout=5s --start-period=20s \
  CMD curl --fail http://localhost:8501/_stcore/health || exit 1

# Run Streamlit
ENTRYPOINT ["streamlit", "run", "/app/src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]