Updating a docker deployment to the latest version

[tholu]

The wiki is currently missing update instructions for updating a Rocket.Chat docker deployment to the latest version: https://github.com/RocketChat/Rocket.Chat/wiki/Docker-Ubuntu-14.04-%2864-bit%29-VPS-with-Nginx-SSL-and-Hubot

This would be helpful in regard to rather critical issues like #1502 which prevents us from using Rocket.Chat in production currently.

[tholu]

I just tried to do the update like that:

docker pull rocketchat/rocket.chat:develop
docker-compose stop rocketchat
docker-compose rm rocketchat
docker-compose up -d rocketchat

Seems to work!

[tholu]

I just updated the documentation to include the commands posted above: https://github.com/RocketChat/Rocket.Chat/wiki/Deploy-with-Docker
This should be checked by someone who knows more about docker than me. However, I'm going ahead and will close this issue now.