git subrepo commit (merge) mailcow/src/mailcow-dockerized

subrepo: subdir:   "mailcow/src/mailcow-dockerized"
  merged:   "c7b1dc37"
upstream: origin:   "https://github.com/mailcow/mailcow-dockerized.git"
  branch:   "master"
  commit:   "a366494c"
git-subrepo: version:  "0.4.6"
  origin:   "???"
  commit:   "???"
Change-Id: Id574ecd4e02e3c4fbf8a1efd49be11c0b6d19a3f
diff --git a/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile b/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile
index d9756d0..b190908 100644
--- a/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile
+++ b/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:3.17
 
-LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"
 
 RUN apk add --update --no-cache \
 	curl \
@@ -18,6 +18,11 @@
 
 COPY docker-entrypoint.sh /docker-entrypoint.sh
 
+# healthcheck (nslookup)
+COPY healthcheck.sh /healthcheck.sh
+RUN chmod +x /healthcheck.sh
+HEALTHCHECK --interval=30s --timeout=10s CMD [ "/healthcheck.sh" ]
+
 ENTRYPOINT ["/docker-entrypoint.sh"]
 
 CMD ["/usr/sbin/unbound"]