This guide will guide you to update ChatPlus server. 

Assume that ChatPlus server has been set up at /var/www/chatplus/chat on your server. Let's log into your server with the SSH root account and run the following commands to update the ChatPlus server

cd /var/www/chatplus/chat
docker-compose pull
docker-compose stop
docker-compose up -d

Congratulation. You have just updated ChatPlus server!