How much value does that actually add and more importantly, how do they monetize that?
In my opinion a hell of a lot.
I was using LXCs before Docker and the experience wasn't too bad as long as you were running native Linux. That's not going to be possible for a lot of folks which means it's back to rolling your own manual VM, then figuring out how to do remote code editing not just to a VM but an LXC within a VM and then figuring out distribution of that along with a lot of other problems that Docker solves.
With Docker, it really is just install it and run 1-2 commands and a lot of major code editors know how to work with it too.
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In my opinion a hell of a lot.
I was using LXCs before Docker and the experience wasn't too bad as long as you were running native Linux. That's not going to be possible for a lot of folks which means it's back to rolling your own manual VM, then figuring out how to do remote code editing not just to a VM but an LXC within a VM and then figuring out distribution of that along with a lot of other problems that Docker solves.
With Docker, it really is just install it and run 1-2 commands and a lot of major code editors know how to work with it too.