diff --git a/Dockerfile.complex b/Dockerfile.complex
index 4463d83..bc97902 100644
--- a/Dockerfile.complex
+++ b/Dockerfile.complex
@@ -1,5 +1,5 @@
 ## Buildstage ##
-FROM lsiobase/alpine:3.9 as buildstage
+FROM lsiobase/alpine:3.12 as buildstage
 
 RUN \
  echo "**** install packages ****" && \
@@ -17,5 +17,7 @@ COPY root/ /root-layer/
 ## Single layer deployed image ##
 FROM scratch
 
+LABEL maintainer="username"
+
 # Add files from buildstage
 COPY --from=buildstage /root-layer/ /