diff --git a/Dockerfile b/Dockerfile
index 760541e..c2154d5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine
-ADD main.sh /bin/
+COPY main.sh /bin/
 RUN chmod +x /bin/main.sh
 RUN apk -Uuv add curl ca-certificates
 ENTRYPOINT /bin/main.sh