GitHub Actions' ubuntu-slim runner is lighter than ubuntu-latest, but caps jobs at 15 minutes
DanielLockyer · x · 2026-11-02
Most GitHub repos default to ubuntu-latest for CI runners, but GitHub also offers ubuntu-slim, a lighter option suited for tasks that don't need a full environment.
The author flags a key limitation: job runtime on ubuntu-slim is capped at 15 minutes, so it won't fit longer-running workflows.
Related event: Little-known ubuntu-slim runner offers cheaper GitHub Actions CI(2 posts)→
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