DNS-collector with Elastic and Kibana

Download the docker-compose file
Create the data folder.
Start the docker stack:
```
sudo docker compose up -d
```
Go to kibana web interface through http://127.0.0.1:5601
Click on Explore on my own and Discover
Finally create index pattern dnscollector and choose dnstap.timestamp-rfc33939ns
Finally, run DNScollector from source and generate some DNS logs from your DNS server with DNStap protocol.
```
go run . -config docs/_integration/elasticsearch/config.yml
```

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