diff --git a/Dockerfile b/Dockerfile
index 0dc4b49..f8e222e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,6 +23,7 @@ RUN mkdir /out \
 RUN apk --no-cache add \
     inotify-tools \
     curl \
+    coreutils \
     && rm -rf /var/cache/apk/*
 
 USER nobody