FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    nmap \
    dnsutils \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better caching
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY cli.py ./
COPY backend/ ./backend/
COPY shared/ ./shared/

# Create non-root user
RUN useradd -m -u 1000 scanner && \
    chown -R scanner:scanner /app

USER scanner

# Expose metrics port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import sys; sys.exit(0)"

# Default command: the CLI (the GTK GUI is not shipped in the image)
ENTRYPOINT ["python", "-u", "cli.py"]
CMD ["--help"]
