diff --git a/Run-acme.sh-in-docker.md b/Run-acme.sh-in-docker.md
index 73afc89..87e9326 100644
--- a/Run-acme.sh-in-docker.md
+++ b/Run-acme.sh-in-docker.md
@@ -56,6 +56,7 @@ Anyway, you can just invoke **neilpang/acme.sh** image as if it were a real shel
 docker run --rm  -itd  \
   -v "$(pwd)/out":/acme.sh  \
   --net=host \
+  --entrypoint /bin/sh \
   --name=acme.sh \
   neilpang/acme.sh 
 ```