Automatic Rebase workflow (asteroid-team/asteroid)

The Automatic Rebase workflow from asteroid-team/asteroid, explained and optimized by Latchkey.

CI health: B - good

Point runs-on at Latchkey and get job timeouts, SHA-pinned actions, self-healing for flaky steps, and up to 58% lower cost, applied automatically.

Grade your own workflow free or run it on Latchkey →

Source: asteroid-team/asteroid.github/workflows/rebase.ymlLicense MITView source

What it does

This is the Automatic Rebase workflow from the asteroid-team/asteroid repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Automatic Rebase
# https://github.com/marketplace/actions/automatic-rebase

on:
  issue_comment:
    types: [created]

jobs:
  rebase:
    name: Rebase
    if: github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase')
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v5
      with:
        fetch-depth: 0
    - name: Automatic Rebase
      uses: cirrus-actions/rebase@1.8

      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Automatic Rebase
# https://github.com/marketplace/actions/automatic-rebase
 
on:
  issue_comment:
    types: [created]
 
jobs:
  rebase:
    timeout-minutes: 30
    name: Rebase
    if: github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase')
    runs-on: latchkey-small
    steps:
    - uses: actions/checkout@v5
      with:
        fetch-depth: 0
    - name: Automatic Rebase
      uses: cirrus-actions/rebase@1.8
 
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Add a job timeout so a hung step cannot burn hours of runner time.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout