Updated date in copyright and golang version in Dockerfile

Author: Steve Scaffidi

builder/Dockerfile

@@ -1,4 +1,4 @@
-# Copyright 2017 The Kubernetes Authors. All rights reserved
+# Copyright 2018 The Kubernetes Authors. All rights reserved
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.10.2
+FROM golang:1.11.0
 LABEL maintainer="Marcin Wielgus <[email protected]>"
 
 ENV GOPATH /gopath/