diff --git a/Dockerfile b/Dockerfile
index 5c50ea08..6b813e56 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,9 @@ FROM i386/ubuntu:12.04
 RUN sed -i 's/archive.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list && \
     sed -i 's/security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
 
+RUN echo "dash dash/sh boolean false" | debconf-set-selections && \
+    DEBIAN_FRONTEND=noninteractive dpkg-reconfigure dash
+
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get install -y \
         build-essential \