Thanks @sam!
So I have ran rebuild from the command line
root@forum:/var/discourse# ./launcher rebuild app
WARNING: No swap limit support
Updating discourse docker
remote: Counting objects: 11, done.
...
~Build Start: 2015-02-10T07:37:02.391921
~Build End: 2015-02-10T07:48:42.554345
Current system status
System information as of Mon Feb 9 21:50:43 EST 2015
System load: 0.1 Processes: 121
Usage of /: 63.1% of 39.25GB Users logged in: 1
Memory usage: 78% IP address for eth0:
Swap usage: 2% IP address for docker0:
Current version: Discourse 1.2.0.beta6 - https://github.com/discourse/discourse version 0ce6524153b7e5545a834d2edf1a6b0de1cdcaef
Now we play the waiting game.