produce war in Dockerfile to ensure all dependencies and plugins are included

Dockerfile

@@ -3,6 +3,6 @@ FROM cryogen:8-jdk_1.8_2.8.1
 RUN rm -rf /tmp/app
 ADD app /tmp/app
 
-RUN lein deps
+RUN lein ring war
 
 #CMD ["java", "-jar", "target/app.jar"]