Test setup-polaris workflow (FairwindsOps/polaris)

The Test setup-polaris workflow from FairwindsOps/polaris, explained and optimized by Latchkey.

What it does

This is the Test setup-polaris workflow from the FairwindsOps/polaris repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

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

The workflow

name: Test setup-polaris
on:
  pull_request:
    branches: [ master ]

jobs:
  build-int:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6.0.2
      - name: Setup polaris
        uses: ./.github/actions/setup-polaris
        with:
          version: 4.2.0
      - name: Use command
        run: polaris version

  build-ext:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6.0.2
      - name: Setup polaris
        uses: fairwindsops/polaris/.github/actions/setup-polaris@master
        with:
          version: 4.2.0
      - name: Use command
        run: polaris version

The same workflow, on Latchkey

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

name: Test setup-polaris
on:
  pull_request:
    branches: [ master ]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build-int:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v6.0.2
      - name: Setup polaris
        uses: ./.github/actions/setup-polaris
        with:
          version: 4.2.0
      - name: Use command
        run: polaris version
 
  build-ext:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v6.0.2
      - name: Setup polaris
        uses: fairwindsops/polaris/.github/actions/setup-polaris@master
        with:
          version: 4.2.0
      - name: Use command
        run: polaris version
 

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.
• Cancel superseded runs when a branch or PR gets a newer push.
• 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 2 jobs per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow