How to Install ElasticSearch in Docker Container

1. Make sure you create a Mount Volume
   - This volume does not really matter if you have created a folder on host or not. Just make sure you that the Volume is registered as Volume in the docker-compose.yml file.

2. Open ports for Kibana, ElasticSearch Container (if you have a cluster configured, make sure you open up ports for other Docker containers too. So that they can communicate with each other. )

3. Increase the vm.max space on the host if you want Elastic Search to work well.
    - Open up sysctl.conf file and paste the following at the end of the file
     - max_map_count = 262144
    -Also in addition run the following code to make changes right now.
      sysctl -w vm.max_map_count=262144
4. Then restart the ElasticSearch containers.