add readme

kibana4/README.md

@@ -0,0 +1,26 @@
+# kibana4
+
+[Kibana4](http://www.elasticsearch.org/overview/kibana/) that can be
+configured using environment variables.
+
+## Usage
+
+Download and view the default config file:
+
+```
+docker run rlister/kibana4 cat config/kibana.yml
+```
+
+Settings can be overridden using environment variables of the same
+name, but uppercased:
+
+For example, to link and connect to an elasticsearch container (using
+the linked `/etc/hosts` entry):
+
+```
+docker run -d --name elasticsearch dockerfile/elasticsearch
+docker run -d --name kibana4 --link elasticsearch:elasticsearch -e ELASTICSEARCH=http://elasticsearch:9200 -p 5601:5601 rlister/kibana4
+```
+
+You should now be able to use your dashboard at
+`http://localhost:5601`.