Appears everything is completely down. "Full Service Disruption" according to the webpage.

Screenshot in case things change:

http://s7.postimg.org/nfwnd81m3/docker_down.png

Does this mean docker apps will go down? or just their services are down?

Not currently-running apps, no. But if you try to start a Docker container and you don't have a copy cached already, you can't download a new one. And you can't upload new ones or changes.