Replace removed transferwise/sanitize-branch-name action with local composite action - #21394
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The transferwise/sanitize-branch-name GitHub Action repo is no longer publicly accessible, breaking CI. Replace with an equivalent local composite action. Co-authored-by: Ona <no-reply@ona.com>
corneliusludmann
approved these changes
Apr 13, 2026
Local composite actions require the repo to be checked out first. Uses sparse-checkout to only fetch .github/actions for speed. Co-authored-by: Ona <no-reply@ona.com>
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Description
The
transferwise/sanitize-branch-nameGitHub Action repository is no longer publicly accessible, breaking all workflows that reference it.This replaces it with a local composite action at
.github/actions/sanitize-branch-name/that does the same thing: takes the current branch name and replaces characters invalid in Docker tags/version strings with hyphens.Same fix as https://github.com/gitpod-io/gitpod-next/pull/18708.
Related Issue(s)
N/A
How to test
Any CI workflow that runs the "Determine Branch" step will exercise the new composite action.