diff --git a/Dockerfile b/Dockerfile
index f83aca4..c5beb5c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,9 @@ MAINTAINER Andre Germann <info@buanet.de>
 
 ENV DEBIAN_FRONTEND noninteractive
 
-RUN apt-get update && apt-get install -y apt-utils curl avahi-daemon git libpcap-dev libavahi-compat-libdnssd-dev libfontconfig gnupg2
+RUN apt-get update && apt-get install -y apt-utils curl avahi-daemon git libpcap-dev libavahi-compat-libdnssd-dev libfontconfig gnupg2 locales
+RUN sed -i -e 's/# de_DE.UTF-8 UTF-8/de_DE.UTF-8 UTF-8/' /etc/locale.gen && \dpkg-reconfigure --frontend=noninteractive locales && \update-locale LANG=de_DE.UTF-8
+ENV LANG de_DE.UTF-8 
 RUN curl -sL https://deb.nodesource.com/setup_6.x | bash
 RUN apt-get install -y build-essential python nodejs
 RUN cp /usr/share/zoneinfo/Europe/Berlin /etc/localtime