MULTIARCH-5995: add ppc64le support to the build

[raja-0940]

Summary by CodeRabbit

Release Notes

• Chores
  • Added support for the ppc64le architecture in build and deployment pipelines alongside existing amd64 and arm64 platforms.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 9ccb6a11-b4ec-4677-84b9-fd9a77347679

📥 Commits

Reviewing files that changed from the base of the PR and between b7e1753 and 8e78e00.

📒 Files selected for processing (3)

• .github/workflows/release.yaml
• doc/kuadrantctl-ci-cd.md
• scripts/plugins

📝 Walkthrough

Walkthrough

This pull request adds support for the ppc64le architecture across the kuadrantctl build and deployment pipeline. The GitHub Actions release workflow matrix is expanded to build for ppc64le in addition to amd64 and arm64. Supporting script and documentation changes ensure the plugin system and Tekton task download mechanisms correctly handle the new architecture target.

Changes

ppc64le Architecture Support

Layer / File(s)	Summary
Release build matrix and plugin scripts .github/workflows/release.yaml, scripts/plugins	The build matrix adds ppc64le to the goarch vector alongside amd64 and arm64, and the plugin binary workspace setup creates darwin-ppc64le and linux-ppc64le directories.
CI/CD documentation doc/kuadrantctl-ci-cd.md	The Tekton task's kuadrantctl download step now maps uname -m value ppc64le to BIN_ARCH="ppc64le" in the architecture selection case statement.

🎯 1 (Trivial) | ⏱️ ~3 minutes

🐰 A rabbit hops through lands anew,
Where ppc64le builds run true,
From GitHub's matrix to scripts so fine,
Three little edits align in line,
Now processors vast can join the crew!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The pull request title 'MULTIARCH-5995: add ppc64le support to the build' directly and clearly summarises the main change across all modified files—adding ppc64le architecture support to the build process.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

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Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/release.yaml:
- Around line 19-21: Update the GitHub Actions matrix in the release workflow to
remove the unsupported darwin/ppc64le pair: keep goos and goarch as separate
lists (goos: [linux, darwin], goarch: [amd64, arm64, ppc64le]) and add an
exclude entry that explicitly excludes the combination {goos: darwin, goarch:
ppc64le}; modify the matrix keys goos and goarch and add the exclude block so
darwin/ppc64le is not built.

In `@scripts/plugins`:
- Line 117: The script currently creates a darwin-ppc64le binary directory
(mkdir -p
$TMP_DIR/binaries/{darwin-amd64,linux-amd64,darwin-arm64,linux-arm64,darwin-ppc64le,linux-ppc64le})
which is invalid for macOS; remove the darwin-ppc64le entry from the brace list
so the mkdir invocation only creates valid OS/arch combos (e.g.,
darwin-amd64,darwin-arm64,linux-amd64,linux-arm64,linux-ppc64le) and ensure the
TMP_DIR/binaries variable usage remains unchanged.

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Fix all unresolved CodeRabbit comments on this PR:

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• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b3ab3848-1247-4b10-9705-b03294bb0ec6

📥 Commits

Reviewing files that changed from the base of the PR and between 894bace and b7e1753.

📒 Files selected for processing (3)

• .github/workflows/release.yaml
• doc/kuadrantctl-ci-cd.md
• scripts/plugins

[Boomatang]

This is not as simple an update as it may seem. When building a release the a plugin for the dns-operator is also included. Currently there is no ppc64le build of that plugin. We would first need to add a build target for that plugin. See https://github.com/Kuadrant/kuadrantctl/blob/main/.github/workflows/plugins.yaml for how the plugins are included.

[raja-0940]

I have added ppc64le support to the dns-operator and raised a PR for the changes. Could you please review it? Thanks.

[prb112]

/lgtm