Remove deprecated version tag from compose files

[arnesetzer]

👋 I did some awesome work for the Pelias project and would love for everyone to have a look at it and provide feedback.

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Here's the reason for this change 🚀

With docker compose version v2.26 (some threads on github say since v2.25, but I didn't test that) compose throws a warning if the compose file still has a version tag.
WARN[0000] /home/geo-coder/docker/projects/[PROJECT NAME]/docker-compose.yml: 'version' is obsolete (https://docs.docker.com/compose/compose-file/04-version-and-name/)

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Here's what actually got changed 👏

• Remove all version tags from existing docker-compose.yml files

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Here's how others can test the changes 👀

• Clone the repo move to a project and check if the warning comes up.

[missinglink]

Interesting, thanks.

So removing this would be a breaking change for older versions, do you know which versions?

For now I'd prefer displaying a warning on newer versions over a breaking change for older versions.

[arnesetzer]

According to some issues on the docker cli it is deprecated since the jump from docker compose v1 to compose v2.
(docker/compose#8950)

I agree with you that this on very low priority. We can leave that as a draft until docker compose will throw an error if the version tag is set.