Docker Image workflow (PowerDNS-Admin/PowerDNS-Admin)
The Docker Image workflow from PowerDNS-Admin/PowerDNS-Admin, explained and optimized by Latchkey.
CI health: C - fair
Point runs-on at Latchkey and get run de-duplication, job timeouts, SHA-pinned actions, self-healing for flaky steps, and up to 58% lower cost, applied automatically.
What it does
This is the Docker Image workflow from the PowerDNS-Admin/PowerDNS-Admin 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
---
name: 'Docker Image'
on:
workflow_dispatch:
push:
branches:
- 'dev'
- 'master'
tags:
- 'v*.*.*'
paths-ignore:
- .github/**
- deploy/**
- docker-test/**
- docs/**
- .dockerignore
- .gitattributes
- .gitignore
- .lgtm.yml
- .whitesource
- .yarnrc
- docker-compose.yml
- docker-compose-test.yml
- LICENSE
- README.md
- SECURITY.md
jobs:
build-and-push-docker-image:
name: Build Docker Image
runs-on: ubuntu-latest
steps:
- name: Repository Checkout
uses: actions/checkout@v2
- name: Docker Image Metadata
id: meta
uses: docker/metadata-action@v3
with:
images: |
powerdnsadmin/pda-legacy
tags: |
type=ref,event=tag
type=semver,pattern={{version}}
type=semver,pattern={{major}}.{{minor}}
type=semver,pattern={{major}}
- name: QEMU Setup
uses: docker/setup-qemu-action@v2
- name: Docker Buildx Setup
id: buildx
uses: docker/setup-buildx-action@v1
- name: Docker Hub Authentication
uses: docker/login-action@v1
with:
username: ${{ secrets.DOCKERHUB_USERNAME_V2 }}
password: ${{ secrets.DOCKERHUB_TOKEN_V2 }}
- name: Docker Image Build
uses: docker/build-push-action@v4
with:
platforms: linux/amd64,linux/arm64
context: ./
file: ./docker/Dockerfile
push: true
tags: powerdnsadmin/pda-legacy:${{ github.ref_name }}
- name: Docker Image Release Tagging
uses: docker/build-push-action@v4
if: ${{ startsWith(github.ref, 'refs/tags/v') }}
with:
platforms: linux/amd64,linux/arm64
context: ./
file: ./docker/Dockerfile
push: true
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
The same workflow, on Latchkey
Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.
--- name: 'Docker Image' on: workflow_dispatch: push: branches: - 'dev' - 'master' tags: - 'v*.*.*' paths-ignore: - .github/** - deploy/** - docker-test/** - docs/** - .dockerignore - .gitattributes - .gitignore - .lgtm.yml - .whitesource - .yarnrc - docker-compose.yml - docker-compose-test.yml - LICENSE - README.md - SECURITY.md concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true jobs: build-and-push-docker-image: timeout-minutes: 30 name: Build Docker Image runs-on: latchkey-small steps: - name: Repository Checkout uses: actions/checkout@v2 - name: Docker Image Metadata id: meta uses: docker/metadata-action@v3 with: images: | powerdnsadmin/pda-legacy tags: | type=ref,event=tag type=semver,pattern={{version}} type=semver,pattern={{major}}.{{minor}} type=semver,pattern={{major}} - name: QEMU Setup uses: docker/setup-qemu-action@v2 - name: Docker Buildx Setup id: buildx uses: docker/setup-buildx-action@v1 - name: Docker Hub Authentication uses: docker/login-action@v1 with: username: ${{ secrets.DOCKERHUB_USERNAME_V2 }} password: ${{ secrets.DOCKERHUB_TOKEN_V2 }} - name: Docker Image Build uses: docker/build-push-action@v4 with: platforms: linux/amd64,linux/arm64 context: ./ file: ./docker/Dockerfile push: true tags: powerdnsadmin/pda-legacy:${{ github.ref_name }} - name: Docker Image Release Tagging uses: docker/build-push-action@v4 if: ${{ startsWith(github.ref, 'refs/tags/v') }} with: platforms: linux/amd64,linux/arm64 context: ./ file: ./docker/Dockerfile push: true tags: ${{ steps.meta.outputs.tags }} labels: ${{ steps.meta.outputs.labels }}
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 useslatchkey-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.
5 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.