Merge pull request #9466 from mkumatag/update-baseimage

Change baseimage for ppc64le dockerfile

Dockerfile-release.ppc64le

@@ -1,4 +1,4 @@
-FROM ppc64le/ubuntu:16.04
+FROM ppc64le/alpine:latest
 
 ADD etcd /usr/local/bin/
 ADD etcdctl /usr/local/bin/