CI workflow (select2/select2)

The CI workflow from select2/select2, explained and optimized by Latchkey.

CI health: F - at risk

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Source: select2/select2.github/workflows/main.ymlLicense MITView source

What it does

This is the CI workflow from the select2/select2 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: CI
on: [push, pull_request]
jobs:
  docs:
    name: Documentation
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@v7
        with:
          fetch-depth: 0
      - uses: astral-sh/setup-uv@v7
      - run: uv run mkdocs build --strict
        env:
          MKDOCS_GIT_COMMITTERS_APIKEY: ${{ secrets.GITHUB_TOKEN }}
      - uses: actions/upload-pages-artifact@v5
        with:
          path: site
  linting:
    name: Linting
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - name: Use Node.js 24
        uses: actions/setup-node@v6
        with:
          node-version: 24
      - name: npm install
        run: npm install
      - name: Run linting
        run: grunt compile lint
  tests:
    name: Tests
    runs-on: ubuntu-latest
    steps:
      - run: sudo apt update
      - run: sudo apt install -y chromium-browser
      - uses: actions/checkout@v7
      - name: Use Node.js 24
        uses: actions/setup-node@v6
        with:
          node-version: 24
      - name: npm install
        run: npm install
      - name: Run tests
        env:
          PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: "1"
          PUPPETEER_EXECUTABLE_PATH: "/usr/bin/chromium-browser"
        run: grunt compile test
  minification:
    name: Minification
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - name: Use Node.js 24
        uses: actions/setup-node@v6
        with:
          node-version: 24
      - name: npm install
        run: npm install
      - name: Run minification
        run: grunt compile minify

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

name: CI
on: [push, pull_request]
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  docs:
    timeout-minutes: 30
    name: Documentation
    runs-on: latchkey-small
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@v7
        with:
          fetch-depth: 0
      - uses: astral-sh/setup-uv@v7
      - run: uv run mkdocs build --strict
        env:
          MKDOCS_GIT_COMMITTERS_APIKEY: ${{ secrets.GITHUB_TOKEN }}
      - uses: actions/upload-pages-artifact@v5
        with:
          path: site
  linting:
    timeout-minutes: 30
    name: Linting
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v7
      - name: Use Node.js 24
        uses: actions/setup-node@v6
        with:
          cache: 'npm'
          node-version: 24
      - name: npm install
        run: npm install
      - name: Run linting
        run: grunt compile lint
  tests:
    timeout-minutes: 30
    name: Tests
    runs-on: latchkey-small
    steps:
      - run: sudo apt update
      - run: sudo apt install -y chromium-browser
      - uses: actions/checkout@v7
      - name: Use Node.js 24
        uses: actions/setup-node@v6
        with:
          cache: 'npm'
          node-version: 24
      - name: npm install
        run: npm install
      - name: Run tests
        env:
          PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: "1"
          PUPPETEER_EXECUTABLE_PATH: "/usr/bin/chromium-browser"
        run: grunt compile test
  minification:
    timeout-minutes: 30
    name: Minification
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v7
      - name: Use Node.js 24
        uses: actions/setup-node@v6
        with:
          cache: 'npm'
          node-version: 24
      - name: npm install
        run: npm install
      - name: Run minification
        run: grunt compile minify

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.
Cache dependency installs on the setup step so they are served from cache.
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.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs

This workflow runs 4 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

actions/checkout astral-sh/setup-uv actions/upload-pages-artifact actions/setup-node