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Add support for new 1vcpu ubuntu-slim runner label#585

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rhysd merged 3 commits intorhysd:mainfrom
cestorer:cs/ubuntu-slim-support
Nov 10, 2025
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Add support for new 1vcpu ubuntu-slim runner label#585
rhysd merged 3 commits intorhysd:mainfrom
cestorer:cs/ubuntu-slim-support

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@cestorer cestorer commented Oct 29, 2025 •
edited by rhysd
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@cestorer cestorer marked this pull request as ready for review October 29, 2025 02:51
@ryo246912 ryo246912 mentioned this pull request Oct 30, 2025
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@muzimuzhi
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muzimuzhi commented Oct 31, 2025

This is incomplete. More places need updates.

Please check out ea8e01d (Merge pull request #491 from ericcornelissen/runner-windows-2025, 2024-12-27) or 9f5e8de (add macos-15-intel runner label support, 2025-09-21).

I found no info about which version of Ubuntu ubuntu-slim uses, thus not sure how to add ubuntu-slim entry in defaultRunnerOSCompats.

actionlint/rule_runner_label.go

Lines 81 to 89 in 540883c

var defaultRunnerOSCompats = map[string]runnerOSCompat{
"ubuntu-latest": compatUbuntu2404,
"ubuntu-latest-4-cores": compatUbuntu2404,
"ubuntu-latest-8-cores": compatUbuntu2404,
"ubuntu-latest-16-cores": compatUbuntu2404,
"ubuntu-24.04": compatUbuntu2404,
"ubuntu-24.04-arm": compatUbuntu2404,
"ubuntu-22.04": compatUbuntu2204,
"ubuntu-22.04-arm": compatUbuntu2204,

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rhysd commented Nov 5, 2025

I'll take a look at this PR within a few days.

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cestorer commented Nov 5, 2025

@muzimuzhi updated

I'm assuming 24.04, but unfortunately there is literally no documentation on that image. :/

@v1v v1v mentioned this pull request Nov 6, 2025
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v1v added a commit to elastic/oblt-actions that referenced this pull request Nov 9, 2025
@v1v
disable runners validation until rhysd/actionlint#585
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rhysd commented Nov 10, 2025

I confirmed the runner is Ubuntu 24.04.

$ lsb_release -a
Distributor ID:	Ubuntu
Description:	Ubuntu 2[4](https://github.com/rhysd/misc/actions/runs/19232713141/job/54974783604#step:3:5).04.3 LTS
Release:	24.04
Codename:	noble

@rhysd rhysd merged commit 22ea053 into rhysd:main Nov 10, 2025
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rhysd commented Nov 10, 2025

Thank you for catching this and I apologize for the late review.

github-merge-queue bot pushed a commit to elastic/oblt-actions that referenced this pull request Nov 11, 2025
@v1v
ci: use ubuntu-slim (#401)
a1a1d5c 
* ci: use ubuntu-slim

* install dependency

* revert

* fix

* disable runners validation until rhysd/actionlint#585

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This was referenced Nov 11, 2025
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muzimuzhi commented Dec 16, 2025

I'm assuming 24.04, but unfortunately there is literally no documentation on that image. :/

FYI, https://github.com/actions/runner-images added ubuntu-slim image definition on Dec 13, 2025. See actions/runner-images#13423. While writing this, ubuntu-slim is still not listed in the "Available Images" README section.

According to the definition, yes ubuntu-slim is (currently) Ubuntu 24.04.

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jsoref commented Jan 23, 2026

Fwiw, actions/runner-images@0830eeb added ubuntu-slim to the "Available Images" README section.

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Request: Add support for new runner label ubuntu-slim

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@cestorer @muzimuzhi @rhysd @jsoref