Test docker image build workflow (hitsz-ids/synthetic-data-generator)

The Test docker image build workflow from hitsz-ids/synthetic-data-generator, explained and optimized by Latchkey.

What it does

This is the Test docker image build workflow from the hitsz-ids/synthetic-data-generator 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 docker image build

on:
  pull_request:
    branches: ["master", "main"]

jobs:
  deploy:
    strategy:
      fail-fast: true

    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3

      # Build docker images
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Build image
        id: docker_build_test
        uses: docker/build-push-action@v4
        with:
          context: .
          platforms: linux/amd64,linux/arm64/v8
          file: ./docker/Dockerfile
          push: false
          tags: build

The same workflow, on Latchkey

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

name: Test docker image build
 
on:
  pull_request:
    branches: ["master", "main"]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  deploy:
    timeout-minutes: 30
    strategy:
      fail-fast: true
 
    runs-on: latchkey-small
 
    steps:
      - uses: actions/checkout@v3
 
      # Build docker images
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Build image
        id: docker_build_test
        uses: docker/build-push-action@v4
        with:
          context: .
          platforms: linux/amd64,linux/arm64/v8
          file: ./docker/Dockerfile
          push: false
          tags: build
 

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• Cancel superseded runs when a branch or PR gets a newer push.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

3 third-party actions are referenced by a movable tag. Pin them 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:

• Container pulls and builds

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