[ZEPPELIN-2492] Use single Dockerfile for each tag (branch-0.7)#2388

1ambda wants to merge 2 commits intoapache:branch-0.7apache/zeppelin:branch-0.7from

1ambda:ZEPPELIN-2492/use-single-dockerfile-for-each-tag-branch071ambda/zeppelin:ZEPPELIN-2492/use-single-dockerfile-for-each-tag-branch07Copy head branch name to clipboard