Support installing docker-compose

[carolynvs]

Would it be useful to have dvm also download the docker-compose client?

$ dvm install --compose 1.7.1
# downloads docker-compose to $DVM_DIR/bin/docker-compose/1.7.1/docker-compose

$ dvm use --compose 1.7.1
# adds the above directory to the path

It would be really neat to have dvm know which version of compose goes with a docker version. So that if you dvm use 1.10.1, the right version of docker-compose is also added to your path. No clue if that information is readily available though...

[rgbkrk]

Docker compose is written in Python. I wouldn't go anywhere near that, as you'd have to rely on the user's python environment or a specialized local version.

[carolynvs]

@rgbkrk docker-compose is just a binary, distributed from their GitHub releases page similar to the docker client. What am I missing?

[rgbkrk]

Whoa! That's changed up! It's still Python so they must be creating a bundled executable. Way cool!

[carolynvs]

@everett-toews @jamiehannaford Have you used docker-compose enough to know about how to match up a docker-compose version with a docker version? Is it just something you need to know from reading release notes?

[etoews]

@carolynvs Let's hold off on this until after DockerCon.

[jeffwidman]

Please make this optional, as I'd rather manage my docker-compose under python virtualenv's...

[carolynvs]

@jeffwidman Yup! If we did this, the default behavior of dvm would remain the same, and the capability to download compose would be controlled with an extra flag.

[carolynvs]

It looks to me like docker-compose isn't going away(?), based on the demos from the DockerCon keynote. I don't have time to add this right now anyway, but we'll see things look when I resurface in a month. 😄

[lifeiscontent]

@carolynvs any updates on this?

[carolynvs]

Not really, no. If you’d like to submit a PR adding support for docker-compose too I’d be happy to review!