add Ubuntu Cosmic (18.10)

[twhitbeck]

No description provided.

[GordonTheTurtle]

Please sign your commits following these rules:
https://github.com/moby/moby/blob/master/CONTRIBUTING.md#sign-your-work
The easiest way to do this is to amend the last commit:

$ git clone -b "add-cosmic" git@github.com:twhitbeck/docker-install.git somewhere
$ cd somewhere
$ git commit --amend -s --no-edit
$ git push -f

Amending updates the existing PR. You DO NOT need to open a new one.

[twhitbeck]

18.10 is officially out. I realize new builds won't be produced until the next stable, but I thought we ought to be ready for it. This is always a pain point for me, as I tend to upgrade asap and then I can't install Docker. Is there a good reason not to get ahead of the curve here?

[jose-bigio]

Related Issue: docker/docker-ce-packaging#121

[SvenDowideit]

@thaJeztah bump :)

[thaJeztah]

@SvenDowideit I think packages for cosmic will go out with the 18.09.1 patch release; see the discussion on docker/docker-ce-packaging#255

The nightly channel should have packages though

[seemethere]

Closing in favor of #86