Build Docker Image workflow (BlueArchiveArisHelper/BAAH)

The Build Docker Image workflow from BlueArchiveArisHelper/BAAH, explained and optimized by Latchkey.

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Source: BlueArchiveArisHelper/BAAH.github/workflows/docker-build.ymlLicense MITView source

What it does

This is the Build Docker Image workflow from the BlueArchiveArisHelper/BAAH 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: Build Docker Image

on:
  push:
    branches:
      - main
    paths:
      - 'requirements.txt'
  workflow_dispatch:
    inputs:
      tag:
        description: "Docker image tag"
        required: true
        default: "latest"

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push:
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            latest
            type=ref,event=tag
            ${{ github.event.inputs.tag }}

      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          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: Build Docker Image
 
on:
  push:
    branches:
      - main
    paths:
      - 'requirements.txt'
  workflow_dispatch:
    inputs:
      tag:
        description: "Docker image tag"
        required: true
        default: "latest"
 
env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}
 
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
      attestations: write
      id-token: write
 
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          persist-credentials: false
 
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
 
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3
 
      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
 
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            latest
            type=ref,event=tag
            ${{ github.event.inputs.tag }}
 
      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          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 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.

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.

Actions used in this workflow

actions/checkout docker/setup-qemu-action docker/setup-buildx-action docker/login-action docker/metadata-action docker/build-push-action