added ENV LANG en_US.UTF-8

Author: Jeremy Wentworth

Dockerfile

@@ -1,5 +1,7 @@
 FROM ubuntu:14.04
 
+ENV LANG en_US.UTF-8
+
 RUN apt-get update && \
 	apt-get install -y vim redis-server 2.6 && \
   	rm -rf /var/lib/apt/lists/*