Neo4JError - Connection Refused

[CrazyCrud]

Thank you very much for your work of packaging the histograph app into a docker container.

If I want to run the image with docker-compose up I get the following error:
Neo4jError: connect ECONNREFUSED 172.21.0.2:7687
Neo4J is running but the service histograph_init_1 can't connect to the bolt.

I tried adding the following statements to the docker-compose.yml but it still fails:

NEO4J_dbms_connector_bolt_listen__address: "0.0.0.0:7687"
NEO4J_dbms_connector_bolt_tls__level: "OPTIONAL"
NEO4J_dbms_connector_bolt_advertised__address: "0.0.0.0:7687"

I run Docker version 2.0 on Windows locally, as well as a Ubuntu 18.04 server machine, the error occurs on both systems.

Thank you for your help!
Best regards