validate workflow (moby/swarmkit)

The validate workflow from moby/swarmkit, explained and optimized by Latchkey.

What it does

This is the validate workflow from the moby/swarmkit 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: validate

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  workflow_dispatch:
  push:
    branches:
      - master
      - main
  pull_request:

env:
  DOCKER_SWARMKIT_USE_CONTAINER: 1

permissions:
  contents: read

jobs:
  validate:
    runs-on: ubuntu-22.04
    strategy:
      fail-fast: false
      matrix:
        target:
          - lint
          - generate-validate
          - vendor-validate
    steps:
      -
        name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
      -
        name: Run
        run: |
          make ${{ matrix.target }}

The same workflow, on Latchkey

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

name: validate
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
on:
  workflow_dispatch:
  push:
    branches:
      - master
      - main
  pull_request:
 
env:
  DOCKER_SWARMKIT_USE_CONTAINER: 1
 
permissions:
  contents: read
 
jobs:
  validate:
    timeout-minutes: 30
    runs-on: latchkey-small
    strategy:
      fail-fast: false
      matrix:
        target:
          - lint
          - generate-validate
          - vendor-validate
    steps:
      -
        name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
      -
        name: Run
        run: |
          make ${{ matrix.target }}
 

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.

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:

• Container pulls and builds

This workflow runs 1 job (3 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow