diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index a630ba60f0..3242d67b7e 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -1,5 +1,9 @@
 FROM ubuntu:14.04
 
+RUN locale-gen en_US.UTF-8  
+ENV LANG en_US.UTF-8  
+ENV LANGUAGE en_US:en  
+ENV LC_ALL en_US.UTF-8  
 RUN apt-get update
 RUN apt-get install -y software-properties-common python-software-properties
 RUN add-apt-repository -y ppa:chris-lea/redis-server; add-apt-repository -y ppa:chris-lea/zeromq