Build workflow (google/go-containerregistry)

The Build workflow from google/go-containerregistry, explained and optimized by Latchkey.

What it does

This is the Build workflow from the google/go-containerregistry 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: Build

on:
  pull_request:
    branches: ['main']

env:
  GOTOOLCHAIN: local

jobs:

  build:
    name: Build
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-go@v6
        with:
          go-version-file: '.go-version'

      - run: |
          go build ./...
          go test -run=^$ ./...

The same workflow, on Latchkey

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

name: Build
 
on:
  pull_request:
    branches: ['main']
 
env:
  GOTOOLCHAIN: local
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
 
  build:
    timeout-minutes: 30
    name: Build
    runs-on: latchkey-small
 
    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-go@v6
        with:
          go-version-file: '.go-version'
 
      - run: |
          go build ./...
          go test -run=^$ ./...
 

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• Cancel superseded runs when a branch or PR gets a newer push.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.

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