Fix check for non-stable docker image in the CD pipeline

[amaltaro]

Fixes #11762
Complement to #12005

Status

ready

Description

As reported in this comment:
#12005 (comment)

the latest changes to this CD pipeline are incorrectly skipping the non-stable tag, because the they refer to the same tag.

Explicitly writing -stable in that grep command should solve this problem.

Is it backward compatible (if not, which system it affects?)

YES

Related PRs

Bug fix for #12005

External dependencies / deployment changes

None

[cmsdmwmbot]

Jenkins results:

• Python3 Unit tests: succeeded
  • 2 changes in unstable tests
• Python3 Pylint check: succeeded
• Pylint py3k check: succeeded
• Pycodestyle check: succeeded

Details at https://cmssdt.cern.ch/dmwm-jenkins/view/All/job/DMWM-WMCore-PR-test/15177/artifact/artifacts/PullRequestReport.html

[cmsdmwmbot]

Jenkins results:

• Python3 Unit tests: failed
  • 1 new failures
  • 2 changes in unstable tests
• Python3 Pylint check: succeeded
• Pylint py3k check: succeeded
• Pycodestyle check: succeeded

Details at https://cmssdt.cern.ch/dmwm-jenkins/view/All/job/DMWM-WMCore-PR-test/15178/artifact/artifacts/PullRequestReport.html

[amaltaro]

Unit test failure is completely unrelated (and we have no unit tests for bash scripts).
@todor-ivanov @vkuznet if you have a chance today, I would appreciate it if you could review this PR. Thanks

[amaltaro]

Thanks Valentin!