Build and Push Docker Image workflow (decolua/9router)
The Build and Push Docker Image workflow from decolua/9router, explained and optimized by Latchkey.
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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 Build and Push Docker Image workflow from the decolua/9router 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: Build and Push Docker Image
on:
push:
tags:
- "v*"
workflow_dispatch:
env:
GHCR_IMAGE: ghcr.io/${{ github.repository }}
DOCKERHUB_IMAGE: decolua/9router
jobs:
build-and-push:
runs-on: ubuntu-latest
permissions:
contents: read
packages: write
steps:
- uses: actions/checkout@v4
- uses: docker/setup-buildx-action@v3
- name: Log in to GHCR
uses: docker/login-action@v3
with:
registry: ghcr.io
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Log in to Docker Hub
uses: docker/login-action@v3
with:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}
- name: Extract metadata
id: meta
uses: docker/metadata-action@v5
with:
images: |
${{ env.GHCR_IMAGE }}
${{ env.DOCKERHUB_IMAGE }}
tags: |
type=semver,pattern={{version}}
type=raw,value=latest,enable={{is_default_branch}}
- name: Build and push
uses: docker/build-push-action@v6
with:
context: .
push: true
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
cache-from: type=registry,ref=${{ env.GHCR_IMAGE }}:buildcache
cache-to: type=registry,ref=${{ env.GHCR_IMAGE }}:buildcache,mode=max
platforms: linux/amd64,linux/arm64
provenance: false
sbom: false
The same workflow, on Latchkey
Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.
name: Build and Push Docker Image on: push: tags: - "v*" workflow_dispatch: env: GHCR_IMAGE: ghcr.io/${{ github.repository }} DOCKERHUB_IMAGE: decolua/9router concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true jobs: build-and-push: timeout-minutes: 30 runs-on: latchkey-small permissions: contents: read packages: write steps: - uses: actions/checkout@v4 - uses: docker/setup-buildx-action@v3 - name: Log in to GHCR uses: docker/login-action@v3 with: registry: ghcr.io username: ${{ github.actor }} password: ${{ secrets.GITHUB_TOKEN }} - name: Log in to Docker Hub uses: docker/login-action@v3 with: username: ${{ secrets.DOCKERHUB_USERNAME }} password: ${{ secrets.DOCKERHUB_TOKEN }} - name: Extract metadata id: meta uses: docker/metadata-action@v5 with: images: | ${{ env.GHCR_IMAGE }} ${{ env.DOCKERHUB_IMAGE }} tags: | type=semver,pattern={{version}} type=raw,value=latest,enable={{is_default_branch}} - name: Build and push uses: docker/build-push-action@v6 with: context: . push: true tags: ${{ steps.meta.outputs.tags }} labels: ${{ steps.meta.outputs.labels }} cache-from: type=registry,ref=${{ env.GHCR_IMAGE }}:buildcache cache-to: type=registry,ref=${{ env.GHCR_IMAGE }}:buildcache,mode=max platforms: linux/amd64,linux/arm64 provenance: false sbom: false
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.
4 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.