ERROR: Version in “./docker-compose.yml” is unsupported. You might be seeing this error because you’re using the wrong Compose file version. Either specify a version of “2” (or “2.0”) and place your service definitions under the
services key, or omit the
version key and place your service definitions at the root of the file to use version 1.
For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/
This is the docker_compose.yml file https://github.com/cyberark/conjur-quickstart/blob/master/docker-compose.yml