diff --git a/Dockerfile b/Dockerfile
index d5d898f..4e1a1e3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,6 +7,7 @@ LABEL maintainer="Robert Kaussow <mail@geeklabor.de>" \
     org.label-schema.schema-version="1.0"
 
 RUN yum install -q -y \
+    dash \
     gcc gcc-c++ \
     libtool libtool-ltdl \
     pam-devel \