diff --git a/Dockerfile b/Dockerfile
index aebba32..b8a1966 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,8 @@ LABEL maintainer="Robert Kaussow <mail@geeklabor.de>" \
 ARG BUILD_VERSION
 ENV VALIDATOR_VERSION="${BUILD_VERSION:-20.6.30}"
 
+ADD overlay/ /
+
 RUN apk add --update --no-cache --virtual .build-deps libarchive-tools curl && \
     apk --update add openjdk8 && \
     mkdir -p /var/www/app && \
@@ -25,4 +27,4 @@ WORKDIR /var/www/app
 
 USER root
 CMD []
-ENTRYPOINT ["java", "-jar", "/var/www/app/vnu.jar"]
+ENTRYPOINT ["/bin/vnu"]
diff --git a/overlay/bin/vnu b/overlay/bin/vnu
new file mode 100755
index 0000000..e32712c
--- /dev/null
+++ b/overlay/bin/vnu
@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+set -eo pipefail
+
+exec java -jar /var/www/app/vnu.jar "$@"