> data-sync-server@1.0.0 start /opt/app-root/src
> node ./index.js
{"level":30,"time":1532701708630,"msg":"Using default schemaListener since SCHEMA_LISTENER_CONFIG environment variable is not defined","pid":19,"hostname":"data-sync-server-1-hfcsr","v":1}
unhandled rejection: RangeError: "port" option should be >= 0 and < 65536: NaN