enhance: add runner.default_image for jobs matching no label (#1164)

A job whose `runs-on` matches none of the runner's labels, which includes every job that sets no `runs-on` at all, runs in `runner.default_image`. It defaults to `docker.gitea.com/runner-images:ubuntu-latest` as before, so a mirror can be pointed at instead.

A runner with no reachable docker daemon now runs such a job on the host, rather than failing on an image it cannot pull. Runners that use docker are unaffected and never probe for one.

This matters most to a host-mode runner, one whose labels are all `host`. Such a runner has no daemon to pull an image with, so a job matching none of its labels used to fail at container start. It now runs on the host, where that runner runs everything else anyway, and it takes no configuration to get there. A host-mode runner that does have a daemon within reach keeps using the image, unchanged.

Supersedes https://gitea.com/gitea/runner/pulls/642

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Co-authored-by: silverwind <me@silverwind.io>
Reviewed-on: https://gitea.com/gitea/runner/pulls/1164
Reviewed-by: silverwind <2021+silverwind@noreply.gitea.com>
This commit is contained in:
bircni
2026-08-19 18:36:00 +00:00
parent bc8161c673
commit 11ac12efa4
9 changed files with 86 additions and 22 deletions
+1 -1
View File
@@ -228,7 +228,7 @@ a workflow with `runs-on: ubuntu-latest` is executed in the `runner-images:ubunt
Names may themselves contain a colon (for example `pool:e57e18d4-10d4-406f-93bf-60f127221bdd`); only `host` and `docker` are treated as schemas.
If a job's `runs-on` matches none of the runner's labels, the job still runs, in the default `docker.gitea.com/runner-images:ubuntu-latest` image. Images maintained for this purpose are listed at [gitea/runner-images](https://gitea.com/gitea/runner-images).
If a job's `runs-on` matches none of the runner's labels, or sets no `runs-on` at all, it still runs: in `runner.default_image` where docker is available, on the host where it is not. Images maintained for this purpose are listed at [gitea/runner-images](https://gitea.com/gitea/runner-images).
Labels are chosen at registration time (`--labels`, or the interactive prompt) and can be changed afterwards by editing `runner.labels` in the config file, or in the Gitea UI under the runner's settings.