FROM python:3.11-slim

# Install system dependencies without requiring root privileges for runtime
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    pkg-config \
    libssl-dev \
    libffi-dev \
    traceroute \
    nmap \
    mtr \
    dnsutils \
    iputils-ping \
    net-tools \
    curl \
    sudo \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

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

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

# Copy application files
COPY . .

# Create non-root user but give necessary privileges for network tools
RUN useradd --create-home --shell /bin/bash app \
    && chown -R app:app /app \
    && echo "app ALL=(ALL) NOPASSWD: /usr/bin/mtr, /usr/bin/traceroute, /usr/bin/nmap" >> /etc/sudoers

# Switch to non-root user
USER app

# Expose port for Hugging Face Spaces
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
  CMD curl -f http://localhost:7860/ || exit 1

# Start the application using main.py directly
CMD ["python", "main.py"]