Verify support for `volumes_from`

[`volumes_from`](https://docs.docker.com/compose/compose-file/compose-file-v2/) was introduced in version 2 of the now legacy docker compose file format. It was removed in version 3 of the previous file format, however [compose-spec reintroduced the key](https://docs.docker.com/compose/compose-file/05-services/#volumes_from).