GitHub 操作：使用不同的环境值重复步骤

Question

我刚刚创建了我的第一个 GitHub 操作工作流程，用于处理 Docker 图像。基本上是这样的：

name: My Name
on: workflow_dispatch

jobs:
  whatever:
    runs-on: ubuntu-latest
    steps:
      - env:
          TARGET_DOCKER_IMAGE: node
          TARGET_TAG: 14-alpine
        run: |
            # ... ca 20 lines of code which reference ${TARGET_DOCKER_IMAGE} and ${TARGET_TAG}
        

现在，我意识到我希望我的操作不仅仅针对 node:14-alpine 图像，还针对其他几个图像。当然，我希望避免复制和粘贴代码。所以，我基本上需要重复相同的步骤，但使用不同的env 值。我该怎么做？

Answer 1

您可以使用matrix strategy 执行此操作。请在下面的例子中罚款，

jobs:
  whatever:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        TAG: [14-alpine, slim, buster, latest]
    steps:
      - env:
          TARGET_DOCKER_IMAGE: node
          TARGET_TAG: ${{ matrix.TAG }}
        run: |
            # ... ca 20 lines of code which reference ${TARGET_DOCKER_IMAGE} and ${TARGET_TAG}

下面还有一个例子，推送到多个 ECR 存储库

jobs:
  build-app:
  runs-on: ubuntu-latest
  strategy:
      matrix:
        Repo: [Repo1, Repo2, Repo3]
    steps:
    # see: https://github.com/aws-actions/configure-aws-credentials
    - name: Configure AWS Credentials
      uses: aws-actions/configure-aws-credentials@v1
      with:
        aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
        aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        aws-region: us-east-1

    # see: https://github.com/aws-actions/amazon-ecr-login
    - name: Log in to Amazon ECR
      id: login-ecr
      uses: aws-actions/amazon-ecr-login@v1

    - name: Build, tag, and push image to Amazon ECR
      env:
        ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
        ECR_REPOSITORY:  ${{ matrix.Repo }}
        IMAGE_TAG: ${{ github.sha }}
      run: |
        docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
        docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG