fixed readme info how to run with docker

Author: koleslena

README.md

@@ -90,7 +90,7 @@ Use [docker](https://www.docker.com/) image.
 ```bash
 mkdir DocumentSamples
 mkdir Licenses
-docker run -p 8080:8080 -v `pwd`/DocumentSamples:/home/groupdocs/app/DocumentSamples -v `pwd`/Licenses:/home/groupdocs/app/Licenses groupdocs/viewer-for-java-spring
+docker run -p 8080:8080 --env application.hostAddress=localhost -v `pwd`/DocumentSamples:/home/groupdocs/app/DocumentSamples -v `pwd`/Licenses:/home/groupdocs/app/Licenses groupdocs/viewer-for-java-spring
 ## Open http://localhost:8080/viewer/ in your favorite browser.
 ```