# Action Runner Default is unpredictable

**URL:** <https://forum.gitea.com/t/action-runner-default-is-unpredictable/12110>\
**Category:** Actions\
**Created:** [May 15, 2026, 7:15am UTC](https://forum.gitea.com/t/action-runner-default-is-unpredictable/12110 "2026-05-15T07:15:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sudo-rsingh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.gitea.com/sudo-rsingh/32/7408_2.png) [@sudo-rsingh](https://forum.gitea.com/u/sudo-rsingh)\
**Post date:** [May 15, 2026, 7:15am UTC](https://forum.gitea.com/t/action-runner-default-is-unpredictable/12110/1 "2026-05-15T07:15:01Z")

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I was setting up Action Runners for my work:  
And came across this in the Act Runner page ( [Act Runner | Gitea Documentation](https://docs.gitea.com/usage/actions/act-runner) ) in section Labels.  
I wanted to point out that node:16-bullseye is a debian based image, but it starts when people do `runs-on: ubuntu-latest` This creates a unpredictability for the users as they are doing it thinking that they will get a ubuntu runner. I think there should be more straightforward set of labels as defaults.

```auto
The default labels are ubuntu-latest:docker://node:16-bullseye,ubuntu-22.04:docker://node:16-bullseye,ubuntu-20.04:docker://node:16-bullseye,ubuntu-18.04:docker://node:16-buster. It is a comma-separated list, and each item is a label.

```

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**Author:** ![jennes](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.gitea.com/jennes/32/7347_2.png) [@jennes](https://forum.gitea.com/u/jennes)\
**Post date:** [May 19, 2026, 6:10pm UTC](https://forum.gitea.com/t/action-runner-default-is-unpredictable/12110/2 "2026-05-19T18:10:00Z")

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First of all, the documentation is a little bit dated. The second thing is, that this naming scheme helps with the transition from GitHub actions.

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**Author:** ![lunny](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.gitea.com/lunny/32/4701_2.png) [@lunny](https://forum.gitea.com/u/lunny)\
**Post date:** [May 21, 2026, 12:07am UTC](https://forum.gitea.com/t/action-runner-default-is-unpredictable/12110/3 "2026-05-21T00:07:10Z")

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[https://gitea.com/gitea/runner-images](https://gitea.com/gitea/runner-images) We have explained the images here.
