When spinning up the stack via `docker-compose -d apache2 elasticsearch kibana` Kibana won't work currently and displays "kibana is not ready yet". `docker-compose logs kibana` the message:
```
{"type":"log","@timestamp":"2019-11-14T15:46:37Z","tags":["status","plugin:reporting@6.6.0","error"],"pid":1,"state":"red","message":"Status changed from uninitialized to red - This version of Kibana requires Elasticsearch v6.6.0 on all nodes. I found the following incompatible nodes in your cluster: v7.1.1 @ 172.26.0.3:9200 (172.26.0.3)","prevState":"uninitialized","prevMsg":"uninitialized"}
```
I update the version to align with elasticsearchs' version which works fine on my machine.
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