Docker: GitHub Packages workflow (lirantal/dockly)
The Docker: GitHub Packages workflow from lirantal/dockly, explained and optimized by Latchkey.
C
CI health: C - fair
Point runs-on at Latchkey and get run de-duplication, job timeouts, self-healing for flaky steps, and up to 58% lower cost, applied automatically.
What it does
This is the Docker: GitHub Packages workflow from the lirantal/dockly 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
workflow (.yml)
name: "Docker: GitHub Packages"
# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.
on:
schedule:
- cron: '0 12 * * 1'
push:
branches: [ main ]
tags: [ 'v*.*.*' ]
pull_request:
branches: [ main ]
env:
REGISTRY: ghcr.io
IMAGE_NAME: ${{ github.repository_owner }}/dockly
jobs:
build_and_publish:
runs-on: ubuntu-latest
permissions:
contents: read
packages: write
steps:
- name: Checkout repository
uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
- name: Log into registry ${{ env.REGISTRY }}
uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
with:
registry: ${{ env.REGISTRY }}
username: ${{ github.repository_owner }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Extract Docker metadata
id: meta
uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9 # v6.1.0
with:
images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
tags: |
type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
type=ref,event=pr
flavor: |
prefix=
suffix=
- name: Build and push Docker image
uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0
with:
context: .
push: true
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
- name: Cosign install
uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
- name: Sign the published container image
env:
COSIGN_PRIVATE_KEY: ${{ secrets.COSIGN_PRIVATE_KEY }}
COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }}
TAGS: ${{ steps.meta.outputs.tags }}
run: |
cosign sign --key env://COSIGN_PRIVATE_KEY ${TAGS} \
-a "repo=${{ github.repository }}" \
-a "workflow=${{ github.workflow }}" \
-a "ref=${{ github.sha }}" \
-a "actor=${{ github.actor }}" \
-a "build=${{ github.run_id }}"
The same workflow, on Latchkey
Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.
name: "Docker: GitHub Packages" # This workflow uses actions that are not certified by GitHub. # They are provided by a third-party and are governed by # separate terms of service, privacy policy, and support # documentation. on: schedule: - cron: '0 12 * * 1' push: branches: [ main ] tags: [ 'v*.*.*' ] pull_request: branches: [ main ] env: REGISTRY: ghcr.io IMAGE_NAME: ${{ github.repository_owner }}/dockly concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true jobs: build_and_publish: timeout-minutes: 30 runs-on: latchkey-small permissions: contents: read packages: write steps: - name: Checkout repository uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 - name: Log into registry ${{ env.REGISTRY }} uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0 with: registry: ${{ env.REGISTRY }} username: ${{ github.repository_owner }} password: ${{ secrets.GITHUB_TOKEN }} - name: Extract Docker metadata id: meta uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9 # v6.1.0 with: images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} tags: | type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }} type=ref,event=pr flavor: | prefix= suffix= - name: Build and push Docker image uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0 with: context: . push: true tags: ${{ steps.meta.outputs.tags }} labels: ${{ steps.meta.outputs.labels }} - name: Cosign install uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2 - name: Sign the published container image env: COSIGN_PRIVATE_KEY: ${{ secrets.COSIGN_PRIVATE_KEY }} COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }} TAGS: ${{ steps.meta.outputs.tags }} run: | cosign sign --key env://COSIGN_PRIVATE_KEY ${TAGS} \ -a "repo=${{ github.repository }}" \ -a "workflow=${{ github.workflow }}" \ -a "ref=${{ github.sha }}" \ -a "actor=${{ github.actor }}" \ -a "build=${{ github.run_id }}"
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.
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.