Modified raspi-motd.sh. Thanks to piksel for the template

rocketpi-motd.sh

#!/bin/bash

logo="$(tput setaf 2)
       .~~.   .~~.
      '. \ ' ' / .'   $(tput sgr0)                       _            $(tput setaf 1)
       .~ .~~~..~.    $(tput sgr0)               _     _| |_        _ $(tput setaf 1)
      : .~.'~'.~. :   $(tput sgr0)   ___ ___ ___| |_ _|_   _|   ___|_|$(tput setaf 1)
     ~ (   ) (   ) ~  $(tput sgr0)  |  _| . |  _| //| -_| |_   | . | |$(tput setaf 1)
    ( : '~'.~.'~' : ) $(tput sgr0)  |_| |___|___|___|___|___|  |  _|_|$(tput setaf 1)
     ~ .~ (   ) ~. ~  $(tput sgr0)                             |_|    $(tput setaf 1)
      (  : '~' :  )
       '~ .~~~. ~'
           '~'
$(tput sgr0)"

if [ `whoami` != "root" ]; then
  echo "$logo"
  echo "Run as root to update your motd."
else
  echo "$logo"
  echo "$logo" > /etc/motd
  echo "Updated MOTD. Log in to see the new logo."
fi