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[ci] set up image publishing to GHCR, add ppc64le images #7405

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jameslamb opened 7:51am on August 24, 2026 wants to merge 958 Δ into microsoft/lightgbm main from
ci/image-builds-pt1

Pull request #7405 quality checks

Code files and functions touched by this pull request are analyzed below.

Quality targets

How does this pull request compare to chosen code quality targets? Read more about code quality targets.

Target name Target value This PR
Maximum Diff Delta per PR 500 958
Maximum comment count per PR 10 2
Pull request maximum business days between activity 3 30
Pull request maximum business days open 5 30

Coupled files

Are there any files from this commit that are always committed alongside another file? This often suggests that there exists code coupling to potentially remove. Read more about code coupling

Committed together % Code file
Coupled code file
Commits in PR with both
100 .ci/ci-images/ppc64le-manylinux/Dockerfile
.github/workflows/ci-images.yml
2
100 .github/workflows/swig.yml
.github/workflows/python_package.yml
2
100 .github/workflows/swig.yml
.github/workflows/r_package.yml
2
88 .github/workflows/cpp.yml
.github/workflows/python_package.yml
1
85 .github/workflows/cpp.yml
.github/workflows/r_package.yml
1
78 .github/workflows/swig.yml
.github/workflows/cpp.yml
1

️ Biggest functions grown or shrunk by pull request

Which functions had their line count change as part of this pull request?

Could not find any functions changed by this pull request.