You'll want to set server.host in your kibana.yml . If you don't, Kibana will default to only binding to localhost . The important part to that is that the container is its own "localhost", so the default value will only allow Kibana to be seen from inside the container , which is clearly not what you want.That's why, in the default config, we set server.host to 0 (shortcut for 0.0.0.0 ). This might be the issue - plz check.
Also a similar thread: Reverse proxy behind nginx docker container not working Kibana 6.2.3 which might have some ideas which you can use.
Thanks
Rashmi