diff --git a/Dockerfile b/Dockerfile
index b59c49a..4579297 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,7 @@
 FROM docker:19.03
 
+apk add bash
+
 COPY entrypoint.sh /entrypoint.sh
 
 ENTRYPOINT ["/entrypoint.sh"]