Estou usando o docker no linux e ao buildar o docker-compose da o seguinte erro
ERROR: The Compose file './docker-compose.yml' is invalid because:
Additional properties are not allowed ('node1', 'mongodb', 'node3', 'node2' were unexpected)
You might be seeing this error because you're using the wrong Compose file version. Either specify a supported version (e.g "2.2" or "3.3") 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/