docker: move to Docker compose v2 #1460
Merged
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Description
Docker compose v1 has been deprecated since July 2023 [1]. Now the GitHub actions Ubuntu runner images removed it, too [2]. So move to v2.
labgrid is obviously not affected by any changes between v1 and v2 other than the compose call
docker-compose
->docker compose
.While at it, drop the obsolete version element [3] from the docker compose config.
[1] https://docs.docker.com/compose/migrate/
[2] actions/runner-images#9692
[3] https://docs.docker.com/compose/compose-file/04-version-and-name/#version-top-level-element-optional
Checklist