NetAlertX

services:
  netalertx:
    network_mode: host   # Use host networking for ARP scanning and other services
    build:
      context: .                                    # Build context is the current directory
      dockerfile: Dockerfile                        # Specify the Dockerfile to use
    image: netalertx:latest
    container_name: netalertx                       # The name when you docker contiainer ls
    read_only: true                                 # Make the container filesystem read-only
    
    # It is most secure to start with user 20211, but then we lose provisioning capabilities.
    # user: "${NETALERTX_UID:-20211}:${NETALERTX_GID:-20211}"
    cap_drop:                                       # Drop all capabilities for enhanced security
      - ALL
    cap_add:                                        # Add only the necessary capabilities
      - NET_ADMIN                                   # Required for scanning with arp-scan, nmap, nbtscan, traceroute, and zero-conf
      - NET_RAW                                     # Required for raw socket operations with arp-scan, nmap, nbtscan, traceroute and zero-conf
      - NET_BIND_SERVICE                            # Required to bind to privileged ports with nbtscan
      - CHOWN                                       # Required for root-entrypoint to chown /data + /tmp before dropping privileges
      - SETUID                                      # Required for root-entrypoint to switch to non-root user
# ...