Add workflow to publish container images on master push

[Copilot]

Status

PENDING REVIEW

What does this PR accomplish?

• Adds dedicated workflow to publish container images on every master branch push
• Reuses existing uberjar.yml and containerize-uberjar.yml workflows via workflow_call
• Skips runs for docs/test-only changes via paths-ignore

How to test this manually?

• Push to master branch with code changes
• Verify workflow triggers at Actions → Publish Container Image
• Confirm both EE and OSS images publish to Docker Hub
• Push docs-only changes, verify workflow doesn't trigger

Additional notes:

• Concurrency control (cancel-in-progress: false) ensures publish operations complete
• Works with existing artifact caching - reuses uberjars when available
• Coexists with run-tests.yml containerization without conflict
• Default branch is master (not main)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Workflow to publish Image</issue_title>
<issue_description>Create a workflow to publish the container image every time there's a change in the main branch</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Workflow to publish Image #5

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