When the runner is stopped mid-job (reboot, autoUpgrade, gitea restart),
its job container keeps running its `sleep 10800` entrypoint and is never
cleaned up, and unused images pile up. Add a 15-min timer that removes a
GITEA-ACTIONS-TASK-N container only when Gitea's DB reports that task as
finished (status 1/2/3/4); running/unknown tasks are left untouched. Also
prune unused actions networks/volumes and dangling images.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
danlin
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