HBASE-23945 Dockerfiles showing hadolint check failures

[ndimiduk]

With this patch, find . -iname '*Dockerfile*' -exec hadolint {} + reports nothing. Let's see what buildbot says.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 31s	Docker mode activated.
-0 ⚠️	yetus	0m 3s	Unprocessed flag(s): --brief-report-file --findbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+0 🆗	mvndep	0m 40s	Maven dependency ordering for branch
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 10s	Maven dependency ordering for patch
		_ Other Tests _
		2m 16s

Subsystem	Report/Notes
Docker	Client=19.03.7 Server=19.03.7 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1244/1/artifact/yetus-jdk8-hadoop2-check/output/Dockerfile
GITHUB PR	#1244
Optional Tests
uname	Linux 6439d2d9d91c 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / df62dde
Max. process+thread count	52 (vs. ulimit of 10000)
modules	C: U:
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1244/1/console
versions	git=2.17.1 maven=2018-06-17T18:33:14Z)
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 15s	Docker mode activated.
-0 ⚠️	yetus	0m 3s	Unprocessed flag(s): --brief-report-file --findbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+0 🆗	mvndep	0m 31s	Maven dependency ordering for branch
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 10s	Maven dependency ordering for patch
		_ Other Tests _
		2m 47s

Subsystem	Report/Notes
Docker	Client=19.03.7 Server=19.03.7 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1244/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#1244
Optional Tests
uname	Linux 4491fe159c62 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / df62dde
Max. process+thread count	51 (vs. ulimit of 10000)
modules	C: U:
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1244/1/console
versions	git=2.17.1 maven=2018-06-17T18:33:14Z)
Powered by	Apache Yetus 0.11.1 https://yetus.apache.org

This message was automatically generated.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 5s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+0 🆗	shelldocs	0m 0s	Shelldocs was not available.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ master Compile Tests _
+0 🆗	mvndep	0m 36s	Maven dependency ordering for branch
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 8s	Maven dependency ordering for patch
+1 💚	hadolint	0m 4s	The patch generated 0 new + 0 unchanged - 12 fixed = 0 total (was 12)
+1 💚	shellcheck	0m 0s	There were no new shellcheck issues.
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
		_ Other Tests _
+0 🆗	asflicense	0m 0s	ASF License check generated no output?
		2m 55s

Subsystem	Report/Notes
Docker	Client=19.03.7 Server=19.03.7 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1244/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#1244
Optional Tests	dupname asflicense hadolint shellcheck shelldocs
uname	Linux 9e09b4a6d17a 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / df62dde
Max. process+thread count	45 (vs. ulimit of 10000)
modules	C: U:
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1244/1/console
versions	git=2.17.1 maven=2018-06-17T18:33:14Z) shellcheck=0.4.6 hadolint=1.17.5-0-g443423c
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[saintstack]

Skimmed. LGTM. Try it.