[acrcssc] Fix continuous patching tasks to handle registries with DNL enabled

[cegraybl]

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Fix for #9512
Task's run variables only return the registry's DNL name (login server name) and not the resource name. This causes the following calls to cli using the registry name to fail as they are using the registry's login server name.
This change checks for the naming convention and retrieves the part that is only the resource name without the added hash.

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[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

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[Copilot]

Pull request overview

This PR fixes an issue where continuous patching tasks fail when working with Azure Container Registry instances that have Domain Name Label (DNL) enabled. DNL registries return login server names with hash suffixes (e.g., registry-hash) instead of the base registry name, causing subsequent Azure CLI commands to fail. The fix adds logic to detect and extract the base registry name from DNL-formatted names.

Changes:

• Added DNL registry name detection and extraction logic in task YAML templates
• Updated cssc container image tag from cbcf692 to 7260211 across all templates
• Incremented extension version from 1.0.0b5 to 1.0.0b6

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/acrcssc/setup.py	Version bump to 1.0.0b6 for the bug fix release
src/acrcssc/HISTORY.rst	Added changelog entry documenting the DNL registry fix
src/acrcssc/azext_acrcssc/templates/tmp_dry_run_template.yaml	Updated cssc container image tag
src/acrcssc/azext_acrcssc/templates/task/cssc_trigger_workflow.yaml	Added DNL detection logic and updated cssc image tag; bash script formatting cleaned up
src/acrcssc/azext_acrcssc/templates/task/cssc_scan_image.yaml	Added DNL detection logic and updated cssc image tag
src/acrcssc/azext_acrcssc/templates/task/cssc_patch_image.yaml	Updated cssc container image tag

[Ruchii-27]

LGTM

[cegraybl]

@zhoxing-ms PR is ready. Please review when you have the chance. Thanks.