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Merged
sbmars merged 3 commits into from
Feb 16, 2026
Merged

Switch all workflows to ubuntu-slim except GitOps #378

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1d30e1f
Switch all workflows to ubuntu-slim
pofl Dec 8, 2025
4db9967
Remove slim from gitops
pofl Dec 8, 2025
0ad43a7
Merge remote-tracking branch 'origin/main' into ubuntu-slim
flaxel Feb 13, 2026
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2 changes: 1 addition & 1 deletion .github/workflows/cla.yml
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Expand Up @@ -8,7 +8,7 @@ on:

jobs:
CLAssistant:
runs-on: ubuntu-24.04
runs-on: ubuntu-slim
steps:
- name: "CLA Assistant"
if: (github.event.comment.body == 'recheck' || github.event.comment.body == 'I have read the CLA Document and I hereby sign the CLA') || github.event_name == 'pull_request'
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2 changes: 1 addition & 1 deletion .github/workflows/template_autodev.yml
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Expand Up @@ -56,7 +56,7 @@ jobs:
autodev:

name: Build Dev Branch
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

# check to not trigger if dependabot did something or PR was closed or label is not the configured dev label
if: github.actor != 'dependabot[bot]' && (github.event_name == 'push' || github.event.label.name == inputs.label || github.event.action == 'closed')
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2 changes: 1 addition & 1 deletion .github/workflows/template_automerge_dependabot.yml
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Expand Up @@ -32,7 +32,7 @@ jobs:
dependabot:

name: auto-merge
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

if: github.event.pull_request.user.login == 'dependabot[bot]'

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2 changes: 1 addition & 1 deletion .github/workflows/template_changeset_check.yml
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Expand Up @@ -6,7 +6,7 @@ jobs:
changeset-check:
name: changeset-check
if: (!contains(github.event.pull_request.user.login , '[bot]'))
runs-on: ubuntu-24.04
runs-on: ubuntu-slim
steps:
- name: Checkout code
uses: actions/checkout@v6
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2 changes: 1 addition & 1 deletion .github/workflows/template_changeset_release.yml
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jobs:
release:
name: changeset-release
runs-on: ubuntu-24.04
runs-on: ubuntu-slim
steps:
- name: Get App Token
uses: actions/create-github-app-token@v2.2.0
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2 changes: 1 addition & 1 deletion .github/workflows/template_flaky_tests.yml
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jobs:
flaky-tests:
name: Flaky-Tests
runs-on: ubuntu-24.04
runs-on: ubuntu-slim
steps:
- name: Find flaky tests
uses: Staffbase/github-action-find-flaky-tests@v0.3.1
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2 changes: 1 addition & 1 deletion .github/workflows/template_jira_tagging.yml
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Expand Up @@ -22,7 +22,7 @@ jobs:
jira-annotate:

name: Annotate all occurring tickets since last release-tag
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Checkout
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2 changes: 1 addition & 1 deletion .github/workflows/template_launchdarkly_code_references.yml
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Expand Up @@ -15,7 +15,7 @@ jobs:
launchDarklyCodeReferences:

name: Find LaunchDarkly flag code references
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Checkout
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2 changes: 1 addition & 1 deletion .github/workflows/template_merge_block.yml
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Expand Up @@ -15,7 +15,7 @@ on:
jobs:
do-not-merge:
name: Check
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Find Comment
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2 changes: 1 addition & 1 deletion .github/workflows/template_release_drafter.yml
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Expand Up @@ -39,7 +39,7 @@ on:
jobs:
update_release_draft:
name: update release draft
runs-on: ubuntu-24.04
runs-on: ubuntu-slim
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@stefanmeschke stefanmeschke Dec 8, 2025

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I wouldn't use the slim thing here since this is on the release production path and therefore time to market will be decreased when change this.

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@pofl pofl Dec 8, 2025

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To my intuition this shouldn't become slower. The release-drafter action is a nodejs action which means it runs single-threaded anyway. So the switch to 1vCPU shouldn't matter 🤔 ?

If ubuntu-slim runs in a container instead of a VM we might even experience faster cold starts 🤔

This line of thinking applies to all actions you commented on.
Wdyt?

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@stefanmeschke stefanmeschke Dec 9, 2025

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This sounds reasonable. 👍
One thought: NodeJS allows spawning child processes which are then decoupled from the parent event loop and therefore the assumption "it's nodejs it will def. only use one CPU" is not correct.


env:
USING_APP_CREDENTIALS: ${{ secrets.app_id != '' && secrets.private_key != '' }}
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2 changes: 1 addition & 1 deletion .github/workflows/template_release_version.yml
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Expand Up @@ -24,7 +24,7 @@ on:
jobs:
new_version:
name: Get new release version
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

outputs:
new_version: ${{ steps.set_version.outputs.next_version }}
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2 changes: 1 addition & 1 deletion .github/workflows/template_secret_scan.yml
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Expand Up @@ -7,7 +7,7 @@ jobs:
trufflehog:

name: trufflehog
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Checkout code
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2 changes: 1 addition & 1 deletion .github/workflows/template_stale.yml
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Expand Up @@ -32,7 +32,7 @@ jobs:
stale:

name: stale
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Stale old PRs
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2 changes: 1 addition & 1 deletion .github/workflows/template_techdocs.yml
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Expand Up @@ -39,7 +39,7 @@ on:
jobs:
techdocs:
name: TechDocs
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Checkout
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2 changes: 1 addition & 1 deletion .github/workflows/template_techdocs_monorepo.yml
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Expand Up @@ -10,7 +10,7 @@ on:
jobs:
techdocs:
name: TechDocs
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Checkout code
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2 changes: 1 addition & 1 deletion .github/workflows/template_terraform_format.yml
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Expand Up @@ -24,7 +24,7 @@ on:
jobs:
format:
name: Format
runs-on: ubuntu-24.04
runs-on: ubuntu-slim
steps:
- name: Get App Token
uses: actions/create-github-app-token@v2.2.0
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2 changes: 1 addition & 1 deletion .github/workflows/template_yaml.yml
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Expand Up @@ -15,7 +15,7 @@ on:
jobs:
yamllint:
name: yamllint
runs-on: ubuntu-24.04
runs-on: ubuntu-slim

steps:
- name: Checkout
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2 changes: 1 addition & 1 deletion .github/workflows/versions.yml
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Expand Up @@ -6,7 +6,7 @@ on:

jobs:
update_readme:
runs-on: ubuntu-24.04
runs-on: ubuntu-slim
steps:
- name: Checkout the source code
uses: actions/checkout@v6
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