Update motd message to notify about docker usage

scripts/motd.sh

@@ -4,16 +4,11 @@ printf "########################################################################
 Rocket.Chat is the leading open source team chat software solution. Free, unlimited and completely customizable with on-premises and SaaS cloud hosting.
 Replace email, HipChat & Slack with the ultimate team chat software solution.
 
-To configure your Rocket.Chat service and traefik loadbalancer with your public domain (ROOT_URL) run:
+This Rocket.Chat image uses docker under the hood. To learn more, please read our docker documentation - https://docs.rocket.chat/deploy/prepare-for-your-deployment/rapid-deployment-methods/docker-and-docker-compose
 
-  rocketchatctl configure --lets-encrypt --root-url=ROOT_URL --letsencrypt-email=EMAIL
-  example: # rocketchatctl configure --lets-encrypt --root-url=https://myrocketchatserver.org [email protected]
+You can find the compose project in \$HOME/rocketchat directory.
   
-Keep your RocketChat server updated using rocketchatctl update. Run rocketchatctl -h to see the full list of available options.
-  
-In case you do not own a public domain, you could use the public IP of your droplet, but traefik will not be able to fetch certificates for you so you will see a privacy alert message when loading https://droplet-IP
- 
-Looking for how to use Rocket.Chat? Be sure to check our docs: https://rocket.chat/docs
-Need some help? Join our community forums https://forums.rocket.chat
+Looking for how to use Rocket.Chat? Be sure to check our docs: https://docs.rocket.chat
+Need some help? Join our community forums https://forums.rocket.chat and https://open.rocket.chat
 ##################################################################################################################################################################
-"
+"