feat(compose): allow running specific services in compose

[balint-backmaker]

Changes

• the DockerCompose class now has a new optional argument for services
• this allows you to run specific services only instead of all of them
• auto-sorting of imports in the compose/__init__.py for convenience (no proper isort right now, just this file)

Issues

Should resolve #315 on a very basic level.

I'll be raising more PRs for QoL:
https://github.com/testcontainers/testcontainers-python/issues?q=is%3Aopen+is%3Aissue+compose

[balint-backmaker]

adding author annotations for easier understanding of my intent.

[balint-backmaker]

@tillahoffmann I've updated the tests to exercise the docker-compose. Unfortunately couldn't do it easily on chrome or firefox because they exit pretty fast and don't want to understand the container mechanics right off the bat.

As a workaround I ended up exercising the hub and thus turning it on/off and proving my point that way.
With Docker Compose V2, this test will become better asserted so I think I'll go there next after this one. Yay for docker-compose ps --format json :)

[tillahoffmann]

Looks good; just a linting error to fix.

[balint-backmaker]

Looks good; just a linting error to fix.

fixed - can you rerun the tests for me and merge at will?

I've started looking at the compose-v2 stuff but I'll move that onto the issue discussion (because v2 isn't a python package any more so rather would stick it to the issue instead of a PR)

[tillahoffmann]

Thanks for the contribution!

[MCatherine1994]

Hello there, I wonder if this feature is already included? or we still need to wait for a new version release?

Thanks!!

[tillahoffmann]

Not yet, but should be soon when #330 is merged.