Reconcile docker-compose shcema on docker/cli vs docker/compose

[ndeloof]

Docker Compose schema on https://github.com/docker/cli/tree/master/cli/compose/schema/data is considered by maintainers as the leading one, and should be the place we use to any proposal for schame enhancements.

We need to double check https://github.com/docker/compose/tree/master/compose/config didn't diverge, and enforce we don't make changes here that have not been already applied to the leading schema.

Idealy we should find a mechanism to avoid duplication, and define a canonical location for compose schemas.

[stale]

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[stale]

This issue has been automatically closed because it had not recent activity during the stale period.