_notice() {
  echo -e "\e[1;33m$1\e[0m"
}

post_install() {
  if ! grep "br_netfilter" /proc/modules; then
    _notice "Load the br_netfilter kernel module or reboot: modprobe br_netfilter."
  fi
  if ! grep "overlay" /proc/modules; then
    _notice "Load the overlay kernel module (if required) or reboot: modprobe overlay."
  fi
}
