MAINTAINER is deprecated, using LABEL now

Dockerfile.amd64

@@ -1,6 +1,6 @@
 FROM frolvlad/alpine-glibc
 
-MAINTAINER Tom Denham <tom@tigera.io>
+LABEL maintainer="Tom Denham <tom@tigera.io>"
 
 ENV FLANNEL_ARCH=amd64
 

Dockerfile.arm

@@ -1,6 +1,6 @@
 FROM arm32v7/busybox:glibc
 
-MAINTAINER Tom Denham <tom@tigera.io>
+LABEL maintainer="Tom Denham <tom@tigera.io>"
 
 ENV FLANNEL_ARCH=arm
 

Dockerfile.arm64

@@ -1,6 +1,6 @@
 FROM arm64v8/busybox:glibc
 
-MAINTAINER Tom Denham <tom@tigera.io>
+LABEL maintainer="Tom Denham <tom@tigera.io>"
 
 ENV FLANNEL_ARCH=arm64
 

Dockerfile.ppc64le

@@ -1,6 +1,6 @@
 FROM ppc64le/busybox:glibc
 
-MAINTAINER Tom Denham <tom@tigera.io>
+LABEL maintainer="Tom Denham <tom@tigera.io>"
 
 ENV FLANNEL_ARCH=ppc64le
 

Dockerfile.s390x

@@ -1,6 +1,6 @@
 FROM s390x/busybox:glibc
 
-MAINTAINER Tom Denham <tom@tigera.io>
+LABEL maintainer="Tom Denham <tom@tigera.io>"
 
 ENV FLANNEL_ARCH=s390x