diff --git a/Dockerfile b/Dockerfile
index e408bc5..016a0f1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,5 @@
 #Dockerfile for a Postfix email relay service
-# hadolint ignore=DL3007
-FROM alpine:latest
+FROM alpine:3
 
 COPY run.sh /