Added note about important settings

Signed-off-by: keithhc2 <keithhc2@users.noreply.github.com>

_opensearch/install/docker.md

@@ -77,6 +77,8 @@ To stop the cluster and delete all data volumes, run:
 docker-compose down -v
 ```
 
+If you're running your cluster in a production environment, be sure to refer to [Important settings]({{site.url}}{{site.baseurl}}/opensearch/install/important-settings) when configuring your machine and cluster.
+{: .note}
 
 #### Sample Docker Compose file