ci: move image builds to ubuntu-26.04 - #4881
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Ubuntu 26.04 ships podman 5.7.0 from apt at /usr/bin/podman, whereas the 24.04 runner image now installs it as a static bundle in /usr/local/bin. The Justfile only probes /usr/bin/podman, so builds on 24.04 silently fell back to docker and failed with "max depth exceeded" once the F44 base image grew past overlay2's 128 layer cap. Assisted-by: Claude Opus 5 via GitHub Copilot CLI Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
Updates the CI reusable image-build workflow to run on the ubuntu-26.04 GitHub-hosted runner image, aiming to restore Podman availability at the expected path and prevent builds from falling back to Docker.
Changes:
- Switch
reusable-build.ymljob runner fromubuntu-24.04toubuntu-26.04.
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| build_container: | ||
| name: image | ||
| runs-on: ubuntu-24.04 | ||
| runs-on: ubuntu-26.04 |
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One line:
runs-on: ubuntu-24.04→ubuntu-26.04inreusable-build.yml.Why
The
ubuntu-24.04runner image (20260804.265) stopped installing podman from apt and now ships it as a static bundle in/usr/local/bin. The Justfile only probes/usr/bin/podman, so builds silently fell back todocker, whose overlay2 driver caps stacked lower dirs at 128.silverblue-main:44has 259 layers, so every Latest build died at theFROMline withmax depth exceeded.Ubuntu 26.04 installs podman from apt, so it lands back at
/usr/bin/podman:Dependency check
Everything
reusable-build.ymlrelies on is present onubuntu26/20260804.94:/usr/local/bin)/usr/bin)/home/linuxbrew/home/linuxbrewThe hardcoded
/home/linuxbrew/.linuxbrew/bin/brewpath used by theInstall Juststep is unchanged on 26.04.Note
ubuntu-26.04is currently public preview.Assisted-by: Claude Opus 5 via GitHub Copilot CLI