I want to monitor my druid in single-server with druid-exporter , I config follow https://github.com/opstree/druid-exporter like below

# Enable metrics emission and tell Druid where to emit messages
druid.emitter=http
druid.emitter.http.recipientBaseUrl=<http://druid.opstreelabs.in:9091/druid>

druid.emitter.http.basicAuthentication=admin:admin

and I run the druid-exporter with docker correctly like