diff --git a/tools/docker-compose/Dockerfile b/tools/docker-compose/Dockerfile
index 96f98e3c3a..19b699ab36 100644
--- a/tools/docker-compose/Dockerfile
+++ b/tools/docker-compose/Dockerfile
@@ -1,9 +1,5 @@
 FROM centos:7
 
-# 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
 ADD Makefile /tmp/Makefile
 RUN mkdir /tmp/requirements
 ADD requirements/requirements.txt \
@@ -35,6 +31,10 @@ RUN openssl req -nodes -newkey rsa:2048 -keyout /etc/nginx/nginx.key -out /etc/n
 RUN openssl x509 -req -days 365 -in /etc/nginx/nginx.csr -signkey /etc/nginx/nginx.key -out /etc/nginx/nginx.crt
 WORKDIR /tmp
 RUN SWIG_FEATURES="-cpperraswarn -includeall -D__`uname -m`__ -I/usr/include/openssl" VENV_BASE="/venv" make requirements_dev
+RUN localedef -c -i en_US -f UTF-8 en_US.UTF-8
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
 WORKDIR /
 EXPOSE 8043 8013 8080 22
 ENTRYPOINT ["/usr/bin/dumb-init"]