diff --git a/dockerfiles/rubygems/Dockerfile b/dockerfiles/rubygems/Dockerfile
index 57819c1..2cc8c2a 100644
--- a/dockerfiles/rubygems/Dockerfile
+++ b/dockerfiles/rubygems/Dockerfile
@@ -1,5 +1,6 @@
 FROM ruby:2.7-alpine
 RUN gem install rubygems-mirror
 RUN apk add bash
-ENV BUSYBOX=1
+# the command timeout provided by old verison of busybox was incompatible with that from coreutils and is compatible now. 
+ENV BUSYBOX=0
 ENV HOME=/tmp