diff --git a/Dockerfile b/Dockerfile
index dd83cc3..60f991a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM lpenz/debian-etch-i386-minbase
 
 RUN apt-get update
-RUN apt-get install build-essential libglide2-dev
+RUN apt-get -y install build-essential libglide2-dev
 RUN $(uname -r)
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