Add self upgrade feature

[nazar-pc]

Would be nice to have two more commands:

docker-compose self-upgrade
docker-compose self-remove

For instance, PHP packages manager Composer has composer self-upgrade and it is way more convenient that going to documentation and copy-pasting installation command or doing something else manually.

[prologic]

This would largely depend on how you install docker-compose in the first place. I normally install this with pip via pip install -U docker-compose; but most others probably install the "packaged" bundle.

[nazar-pc]

What do you mean under "packaged bundle"?
I'd prefer install regular package from repository like Docker itself, but Compose, Swarm and Machine are not in repository yet:(

[prologic]

docker-compose is shipped and released as a binary executable with all dependencies shipped normally; whilst some of us (maybe more Python devs/users) use a pip installed version.

[prologic]

I'm pretty sure we use pyinstaller to package/bundle up docker-compose in a portable way for our users :)

[nazar-pc]

I meant regular deb/rmp repository to get everything upgraded together.

[prologic]

This would be all but useless for anyone else that isn't on Debian/Ubuntu. What about RHEL/CentOS? What about CRUX? What about OS X? What about manually installed, pip installed? I think supporting self-upgrade command is very much "platform/OS" specific IHMO. -- What about Windows?

[nazar-pc]

I was talking about both deb and rpm, others can use it as they use it now. Moreover, repositories already exists and used to install Docker itself.

I have it installed as specified in documentation, namely:

curl -L https://github.com/docker/compose/releases/download/VERSION_NUM/docker-compose-`uname -s-uname -m` > /usr/local/bin/docker-compose

Now uninstallation:

rm /usr/local/bin/docker-compose

Just look into documentation: https://docs.docker.com/compose/install/

This is just single static binary, I do not see any single reason why it might be difficult for Compose to override itself with new binary or just remove itself.
This will likely work on any OS. (BTW, Docker is not working on Windows yet).

[prologic]

I'm just saying there are platform/OS things to consider; and FYI Docker is available (Docker Engine) on Windows as a preview :) See Sven's blog posts about him testing it out! Docker Client itself on Windows has been available since bot2docker and friends :)

[nazar-pc]

I do not have Windows, can't try it, LOL)
Well, this is all offtopic, waiting for answer from developers...

[aanand]

I doubt we would add a self-upgrade feature to Compose in isolation. Most people are going to install via the Toolbox, and it makes sense to upgrade components together, since newer versions of the tools often drop compatibility for older versions of the other tools.

I can see a future where the Toolbox can upgrade all components at once, but that's not (directly) a Compose concern.

[prologic]

As long as Compose can still be shipped and installed either as a binary bundle or via pip I'm happy!

[dnephin]

Closing this. It will either be handled by toolbox, or with #2235 (allowing the distro to upgrade as it would normally).