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Change Dependabot runner from ubuntu-latest to ubuntu-slim#106

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mprins merged 3 commits into
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use-slim-images
Jan 26, 2026
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Change Dependabot runner from ubuntu-latest to ubuntu-slim#106
mprins merged 3 commits into
mainfrom
use-slim-images

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@mprins mprins commented Jan 26, 2026

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@mprins mprins self-assigned this Jan 26, 2026
@mprins mprins added the infrastructure build infrastructure (Maven plugins, CI related, ...) label Jan 26, 2026
@mprins mprins marked this pull request as ready for review January 26, 2026 13:30
Copilot AI review requested due to automatic review settings January 26, 2026 13:30
@mprins mprins merged commit 829d6ec into main Jan 26, 2026
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@mprins mprins deleted the use-slim-images branch January 26, 2026 13:30
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Pull request overview

This PR attempts to change the GitHub Actions runner from ubuntu-latest to ubuntu-slim across three workflow files. However, ubuntu-slim is not a valid GitHub-hosted runner label.

Changes:

  • Modified the runs-on value from ubuntu-latest to ubuntu-slim in the Dependabot auto-merge workflow
  • Modified the runs-on value from ubuntu-latest to ubuntu-slim in the Renovate config validator workflow
  • Modified the runs-on value from ubuntu-latest to ubuntu-slim in three jobs within the cleanup/maintenance workflow

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 7 comments.

File Description
.github/workflows/dependabot.yml Changes runner to ubuntu-slim for Dependabot auto-merge job
.github/workflows/renovate-configvalidator.yml Changes runner to ubuntu-slim for Renovate validator job
.github/workflows/cleanup.yml Changes runner to ubuntu-slim for three jobs: stale PR cleanup, workflow cleanup, and Docker image cleanup

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jobs:
stale:
runs-on: ubuntu-latest
runs-on: ubuntu-slim
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The PR title indicates "Change Dependabot runner from ubuntu-latest to ubuntu-slim", but this file is a cleanup/maintenance workflow, not a Dependabot-related workflow. The title should be updated to reflect that multiple workflows are being changed, or the scope of changes should be limited to only the Dependabot workflow as suggested by the title.

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jobs:
dependabot:
runs-on: ubuntu-latest
runs-on: ubuntu-slim
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The runner label 'ubuntu-slim' is not a valid GitHub Actions hosted runner. GitHub Actions provides 'ubuntu-latest', 'ubuntu-22.04', and 'ubuntu-20.04', but not 'ubuntu-slim'. This will cause workflow runs to fail with an error indicating that no runner matching this label could be found. Unless 'ubuntu-slim' is a self-hosted runner configured in this repository's settings (which appears unlikely based on the lack of documentation), this should be reverted to 'ubuntu-latest' or changed to another valid hosted runner label.

Suggested change
runs-on: ubuntu-slim
runs-on: ubuntu-latest

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jobs:
renovate-validator:
runs-on: ubuntu-latest
runs-on: ubuntu-slim
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The runner label 'ubuntu-slim' is not a valid GitHub Actions hosted runner. GitHub Actions provides 'ubuntu-latest', 'ubuntu-22.04', and 'ubuntu-20.04', but not 'ubuntu-slim'. This will cause workflow runs to fail with an error indicating that no runner matching this label could be found. Unless 'ubuntu-slim' is a self-hosted runner configured in this repository's settings (which appears unlikely based on the lack of documentation), this should be reverted to 'ubuntu-latest' or changed to another valid hosted runner label.

Suggested change
runs-on: ubuntu-slim
runs-on: ubuntu-latest

Copilot uses AI. Check for mistakes.
jobs:
stale:
runs-on: ubuntu-latest
runs-on: ubuntu-slim
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Copilot AI Jan 26, 2026

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The runner label 'ubuntu-slim' is not a valid GitHub Actions hosted runner. GitHub Actions provides 'ubuntu-latest', 'ubuntu-22.04', and 'ubuntu-20.04', but not 'ubuntu-slim'. This will cause workflow runs to fail with an error indicating that no runner matching this label could be found. Unless 'ubuntu-slim' is a self-hosted runner configured in this repository's settings (which appears unlikely based on the lack of documentation), this should be reverted to 'ubuntu-latest' or changed to another valid hosted runner label.

Copilot uses AI. Check for mistakes.

workflows:
runs-on: ubuntu-latest
runs-on: ubuntu-slim
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The runner label 'ubuntu-slim' is not a valid GitHub Actions hosted runner. GitHub Actions provides 'ubuntu-latest', 'ubuntu-22.04', and 'ubuntu-20.04', but not 'ubuntu-slim'. This will cause workflow runs to fail with an error indicating that no runner matching this label could be found. Unless 'ubuntu-slim' is a self-hosted runner configured in this repository's settings (which appears unlikely based on the lack of documentation), this should be reverted to 'ubuntu-latest' or changed to another valid hosted runner label.

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dockercleanup:
name: 'Pruning Untagged Images'
runs-on: ubuntu-latest
runs-on: ubuntu-slim
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The runner label 'ubuntu-slim' is not a valid GitHub Actions hosted runner. GitHub Actions provides 'ubuntu-latest', 'ubuntu-22.04', and 'ubuntu-20.04', but not 'ubuntu-slim'. This will cause workflow runs to fail with an error indicating that no runner matching this label could be found. Unless 'ubuntu-slim' is a self-hosted runner configured in this repository's settings (which appears unlikely based on the lack of documentation), this should be reverted to 'ubuntu-latest' or changed to another valid hosted runner label.

Copilot uses AI. Check for mistakes.
jobs:
renovate-validator:
runs-on: ubuntu-latest
runs-on: ubuntu-slim
Copy link

Copilot AI Jan 26, 2026

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The PR title indicates "Change Dependabot runner from ubuntu-latest to ubuntu-slim", but this file is the Renovate config validator workflow, not a Dependabot-related workflow. The title should be updated to reflect that multiple workflows are being changed, or the scope of changes should be limited to only the Dependabot workflow as suggested by the title.

Copilot uses AI. Check for mistakes.
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