diff --git a/Dockerfile b/Dockerfile
index e95a750..95273a1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ RUN cargo build --release
 FROM alpine
 
 COPY --from=0 /webmention-filer/target/release/webmention-filer /usr/bin/
+COPY send-daily-mail.sh send-daily-mail.sh
 
 RUN apk add mailx