Adds an image for Yolean/kubernetes-kafka#41 and similar init containers

Author: solsson

kubectl-kafkacat/Dockerfile

@@ -1,8 +1,10 @@
+# Select digest to have the same FROM as kafka-jre
 FROM solsson/kafkacat@sha256:1266d140c52cb39bf314b6f22b6d7a01c4c9084781bc779fdfade51214a713a8
 
-ENV KUBERNETES_VERSION=1.7.1
+ENV KUBERNETES_VERSION=1.7.2
 
 RUN set -ex; \
+  export DEBIAN_FRONTEND=noninteractive; \
   runDeps=''; \
   buildDeps='curl ca-certificates'; \
   apt-get update && apt-get install -y $runDeps $buildDeps --no-install-recommends; \