diff --git a/Dockerfile b/Dockerfile
index d89b309..5a46c11 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ ENV KUBE_LATEST_VERSION="v1.14.2"
 USER root
 RUN curl -L https://storage.googleapis.com/kubernetes-release/release/${KUBE_LATEST_VERSION}/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
  && chmod +x /usr/local/bin/kubectl
-RUN zypper in -n expect
+RUN zypper in -y expect
 
 COPY entrypoint.sh /home/step/
 RUN chmod +x /home/step/entrypoint.sh