diff --git a/Dockerfile b/Dockerfile
index d6134ce..a68783b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
 FROM docker:stable
+RUN apk add busybox-extras
 COPY start-restroom.sh /start-restroom.sh
 RUN chmod +x /start-restroom.sh
 ADD contracts /contracts