Docker Build workflow (ErlichLiu/DeepClaude)

The Docker Build workflow from ErlichLiu/DeepClaude, explained and optimized by Latchkey.

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Source: ErlichLiu/DeepClaude.github/workflows/docker-build.ymlLicense MITView source

What it does

This is the Docker Build workflow from the ErlichLiu/DeepClaude 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 Build

on:
  push:
    branches: [ "main" ]
  workflow_dispatch:

jobs:
  check-repository:
    runs-on: ubuntu-latest
    outputs:
      is_original: ${{ steps.check.outputs.is_original }}
    steps:
      - id: check
        run: |
          if [ "${{ github.repository }}" = "ErlichLiu/DeepClaude" ]; then
            echo "is_original=true" >> $GITHUB_OUTPUT
          else
            echo "is_original=false" >> $GITHUB_OUTPUT
          fi

  build:
    needs: check-repository
    if: needs.check-repository.outputs.is_original == 'true'
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
    
    steps:
      - uses: actions/checkout@v4

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set lowercase variables
        run: |
          OWNER_LOWER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
          REPO_NAME_LOWER=$(echo "${{ github.event.repository.name }}" | tr '[:upper:]' '[:lower:]')
          echo "OWNER_LOWER=$OWNER_LOWER" >> $GITHUB_ENV
          echo "REPO_NAME_LOWER=$REPO_NAME_LOWER" >> $GITHUB_ENV

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          driver: docker-container

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            ghcr.io/${{ env.OWNER_LOWER }}/${{ env.REPO_NAME_LOWER }}:latest
            ghcr.io/${{ env.OWNER_LOWER }}/${{ env.REPO_NAME_LOWER }}:${{ github.sha }}

The same workflow, on Latchkey

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

name: Docker Build
 
on:
  push:
    branches: [ "main" ]
  workflow_dispatch:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  check-repository:
    timeout-minutes: 30
    runs-on: latchkey-small
    outputs:
      is_original: ${{ steps.check.outputs.is_original }}
    steps:
      - id: check
        run: |
          if [ "${{ github.repository }}" = "ErlichLiu/DeepClaude" ]; then
            echo "is_original=true" >> $GITHUB_OUTPUT
          else
            echo "is_original=false" >> $GITHUB_OUTPUT
          fi
 
  build:
    timeout-minutes: 30
    needs: check-repository
    if: needs.check-repository.outputs.is_original == 'true'
    runs-on: latchkey-small
    permissions:
      packages: write
      contents: read
    
    steps:
      - uses: actions/checkout@v4
 
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
 
      - name: Set lowercase variables
        run: |
          OWNER_LOWER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
          REPO_NAME_LOWER=$(echo "${{ github.event.repository.name }}" | tr '[:upper:]' '[:lower:]')
          echo "OWNER_LOWER=$OWNER_LOWER" >> $GITHUB_ENV
          echo "REPO_NAME_LOWER=$REPO_NAME_LOWER" >> $GITHUB_ENV
 
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          driver: docker-container
 
      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            ghcr.io/${{ env.OWNER_LOWER }}/${{ env.REPO_NAME_LOWER }}:latest
            ghcr.io/${{ env.OWNER_LOWER }}/${{ env.REPO_NAME_LOWER }}:${{ github.sha }}

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 2 jobs 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/login-action docker/setup-buildx-action docker/build-push-action