add support for unsortable tags (SHA tags) and non-standard :latest tag

[nickboldt]

What does this PR do?

#21575 add support for unsorted tags (when dealing with non-semver image tags like
https://quay.io/repository/devfile/base-developer-image?tab=tags&tag=latest which is SHA-based tags);
add support for non-standard latet tag queries (eg., if there's no :latest tag, use :ubi8-latest)

Change-Id: I6b36210499b7625e19f2cf389f608d8cb452ff14
Signed-off-by: Nick Boldt nboldt@redhat.com

Screenshot/screencast of this PR

N/A

What issues does this PR fix or reference?

eclipse-che/che#21575

How to test this PR?

1. check out this PR:

devfile/developer-images@ec3d8c0

2. change the ubi8/Dockerfile so it's building from:

# https://quay.io/devfile/base-developer-image#^ubi8-
FROM quay.io/devfile/base-developer-image:ubi8-8d9dc15

3. get scripts:

cd /tmp; curl -sSLkO https://raw.githubusercontent.com/redhat-developer/devspaces/2f8fbbea472be0f2953cb8ce33d72dc3ccfc20dd/product/getLatestImageTags.sh
cd /tmp; curl -sSLkO https://raw.githubusercontent.com/redhat-developer/devspaces/2f8fbbea472be0f2953cb8ce33d72dc3ccfc20dd/product/updateBaseImages.sh
chmod +x *.sh

4. run an update of the Dockerfiles:

cd /where/you/have developer-images checked out/
/tmp/updateBaseImages.sh -b main -w `pwd` -f Dockerfile      -maxdepth 3 --no-commit --no-push  -x "latest|main|source" --latestNext ubi8-latest --sort-tags false -v

This is the error I don't let know how to work around -- the newer tag is found, but the "which one is greater?" check is failing:

#CURR_TAGver=ubi8; CURR_TAGrev=8d9dc15; CURR_TAGrevbase=8d9dc15; CURR_TAGrevsuf=8d9dc15
#LATE_TAGver=ubi8; LATE_TAGrev=13008af; LATE_TAGrevbase=13008af; LATE_TAGrevsuf=13008af
- quay.io/devfile/base-developer-image:ubi8-8d9dc15
/home/nboldt/p/updateBaseImages.sh: line 306: [[: 13008af: value too great for base (error token is "13008af")
/home/nboldt/p/updateBaseImages.sh: line 306: [[: 13008af: value too great for base (error token is "13008af")

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• The repository devfile is up to date and works, if one exists
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.