A boatload of new updates I'm unsure about.

Some of these are useful to anybody, like the wemux changes, but some of
this is either specific to me or is installing ruby which I'm not sure
we even want on this container when we have the other containers for
actually running ruby code. Still, it's pretty handy to just be able to
bundle and start simple apps within the container. But it's a slippery
slope that leads to postgres, mysql, and redis all running on this thing
and bogging it down.