Mattermost Docker preview

Hi all,

I wanted to have a try to Mattermost, so I decided to run the Docker image. Folowing the docs Docker page, everything is up an running but there is nothing to display at http://localhost:8065. These are the mattermost.log content:

[2016/07/01 11:22:49 UTC] [INFO] Current version is 3.0.0 (3.0.3/Fri May 27 18:08:10 UTC 2016/cb745475452a9fc8ef3a9fedf6b34af7d05adba9)
[2016/07/01 11:22:49 UTC] [INFO] Enterprise Enabled: false
[2016/07/01 11:22:49 UTC] [INFO] Current working directory is /mm/mattermost
[2016/07/01 11:22:49 UTC] [INFO] Loaded config file from /mm/mattermost/config/config_docker.json
[2016/07/01 11:22:49 UTC] [INFO] Server is initializing...
[2016/07/01 11:22:49 UTC] [INFO] Pinging sql master database
[2016/07/01 11:22:49 UTC] [CRIT] Failed to ping db err:dial tcp [::1]:3306: getsockopt: connection refused

Any clue how to fix this? The problem looks related to MySQL (port 3306). I'm testing it on my local Ubuntu 14.04 desktop, Docker 1.11.2.

Thanks!