diff --git a/Dockerfile b/Dockerfile
index 27d310f..dc02004 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,7 @@ ARG ALPINE_VERSION=3.13.6
 ARG BASE_IMAGE=alpine
 ARG EMAIL=monit@sutty.nl
 FROM ${BASE_IMAGE}:${ALPINE_VERSION} as build
+ENV EMAIL ${EMAIL:-monit@sutty.nl}
 
 RUN apk add --no-cache tzdata