Validates against a gotcha

Author: solsson

update-kafka-image.sh

@@ -3,6 +3,8 @@
 IMAGE=$1
 [ -z "$IMAGE" ] && echo "First argument should be the image to set" && exit 1
 
+[[ $IMAGE != solsson/kafka:* ]] && echo "Should be the full image identifier" && exit 1
+
 for F in ./ test/ zookeeper/; do
   sed -i "s|image: solsson/kafka:.*|image: $IMAGE|" $F*.yml
 done