diff --git a/Dockerfile b/Dockerfile
index 70f303f..f4ec6dc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,9 @@ MAINTAINER Robert Schumann <gutmensch@n-os.org>
 
 ENV raumserver_release "http://bassmaniacs.com/data/appBinaries/raumserver/currentVersion"
 ENV raumserver_http "8090"
+
 ENV PATH /opt:$PATH
+ENV DEBIAN_FRONTEND noninteractive
 
 WORKDIR /opt
 
@@ -14,9 +16,7 @@ COPY settings.xml ./settings.xml
 RUN set -x \
       && apt-get update \
       && apt-get install -y --no-install-recommends wget unzip binutils libunwind8 \
-      && rm -rf /var/lib/apt/lists/*
-
-RUN set -x \
+      && rm -rf /var/lib/apt/lists/* \
       && wget -q --no-check-certificate $raumserver_release/raumserverDaemon_linux_X64.zip \
       && unzip raumserverDaemon_linux_X64.zip -d raumserver && rm -f raumserverDaemon_linux_X64.zip \
       && mv raumserver/settings.xml raumserver/settings.xml.dist \