Hosted image inventory
GitHub Actions ubuntu-latest image migration command not found package removed preinstalled tools Ubuntu latest hosted image software installed GitHub
A pipeline stops at `command not found` after the label migrates, despite no dependency change.
Agent Quick Fix
Repair against the current GitHub hosted Ubuntu image contract, then keep the change narrow and source-backed.
Product: GitHub hosted Ubuntu image
Current-contract area: ubuntu-latest no longer contains an implicitly used package
Likely root cause: A pipeline stops at `command not found` after the label migrates, despite no dependency change.
Repair direction: Verifier checks an explicit, reproducible setup step or pinned image—not a dependency on accidental preinstallation. Require explicit setup/pinning that works on a fresh image.Symptom
A pipeline stops at `command not found` after the label migrates, despite no dependency change.
Why This Happens
Preinstalled package inventory and exact tool versions are properties of a moving hosted image and cannot be recovered from local code.
Common Wrong Fixes
- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.
Codex Search Keywords
These are the search terms observed in a neutral Codex validation run for this failure shape.
GitHub Actions ubuntu-latest image migration command not found package removed preinstalled tools Ubuntu latest hosted image software installed GitHub Actions runner images
GitHub Actions hosted runner images ubuntu-latest preinstalled software list removed package command not found
site:github.com/actions/runner-images ubuntu-latest migration 24.04 installed software
https://github.com/actions/runner-imagesSource Trail
GitHub source file/reference: