- Note: Building with Docker Build Cloud only requires read access, but you need write access to push images to a Docker Hub repository.


## CI platform examples

> [!NOTE]
>
> In your CI/CD configuration, set the following variables:
> - `DOCKER_PAT` — your access token (PAT or OAT)
> - `DOCKER_USER` — your Docker Hub username (for PAT) or organization name (for OAT)
>
> This ensures your builds authenticate correctly with Docker Build Cloud.

### GitHub Actions

```yaml
name: ci

on:
  push:
    branches:
      - "main"

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ vars.DOCKER_USER }}
          password: ${{ secrets.DOCKER_PAT }}
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          driver: cloud
          endpoint: "<ORG>/default"
          install: true
      
      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          tags: "<IMAGE>"
          # For pull requests, export results to the build cache.
          # Otherwise, push to a registry.
          outputs: ${{ github.event_name == 'pull_request' && 'type=cacheonly' || 'type=registry' }}
```

### GitLab

```yaml
default:
  image: docker:24-dind
  services:
    - docker:24-dind
  before_script:
    - docker info
    - echo "$DOCKER_PAT" | docker login --username "$DOCKER_USER" --password-stdin
    - |
      apk add curl jq
      ARCH=${CI_RUNNER_EXECUTABLE_ARCH#*/}
      BUILDX_URL=$(curl -s https://raw.githubusercontent.com/docker/actions-toolkit/main/.github/buildx-lab-releases.json | jq -r ".latest.assets[] | select(endswith(\"linux-$ARCH\"))")
      mkdir -vp ~/.docker/cli-plugins/
      curl --silent -L --output ~/.docker/cli-plugins/docker-buildx $BUILDX_URL
      chmod a+x ~/.docker/cli-plugins/docker-buildx
    - docker buildx create --use --driver cloud ${DOCKER_ORG}/default

variables:
  IMAGE_NAME: <IMAGE>
  DOCKER_ORG: <ORG>

# Build multi-platform image and push to a registry
build_push:
  stage: build
  script:
    - |
      docker buildx build \
        --platform linux/amd64,linux/arm64 \
        --tag "${IMAGE_NAME}:${CI_COMMIT_SHORT_SHA}" \
        --push .

# Build an image and discard the result
build_cache:
  stage: build
  script:
    - |
      docker buildx build \
        --platform linux/amd64,linux/arm64 \
        --tag "${IMAGE_NAME}:${CI_COMMIT_SHORT_SHA}" \
        --output type=cacheonly \
        .
```

### Circle CI

```yaml
version: 2.1

jobs:
  # Build multi-platform image and push to a registry
  build_push:
    machine:
      image: ubuntu-2204:current
    steps:
      - checkout

      - run: |
          mkdir -vp ~/.docker/cli-plugins/
          ARCH=amd64
          BUILDX_URL=$(curl -s https://raw.githubusercontent.com/docker/actions-toolkit/main/.github/buildx-lab-releases.json | jq -r ".latest.assets[] | select(endswith(\"linux-$ARCH\"))")
          curl --silent -L --output ~/.docker/cli-plugins/docker-buildx $BUILDX_URL
          chmod a+x ~/.docker/cli-plugins/docker-buildx

      - run: echo "$DOCKER_PAT" | docker login --username $DOCKER_USER --password-stdin
      - run: docker buildx create --use --driver cloud "<ORG>/default"

      - run: |
          docker buildx build \
          --platform linux/amd64,linux/arm64 \
          --push \
          --tag "<IMAGE>" .

  # Build an image and discard the result
  build_cache:
    machine:
      image: ubuntu-2204:current
    steps:
      - checkout

      - run: |
          mkdir -vp ~/.docker/cli-plugins/
          ARCH=amd64
          BUILDX_URL=$(curl -s https://raw.githubusercontent.com/docker/actions-toolkit/main/.github/buildx-lab-releases.json | jq -r ".latest.assets[] | select(endswith(\"linux-$ARCH\"))")
          curl --silent -L --output ~/.docker/cli-plugins/docker-buildx $BUILDX_URL
          chmod a+x ~/.docker/cli-plugins/docker-buildx

      - run: echo "$DOCKER_PAT" | docker login --username $DOCKER_USER --password-stdin