title: Github Actions Failing
body: <p>Github Actions were working in my repository till yesterday. I didnt make any changes in .github/workflows/dev.yml file or in DockerFile.</p>
  <p>But, suddenly in recent pushes, my Github Actions fail with the error</p>
  <blockquote>
  <p><strong>Setup, Build, Publish, and Deploy</strong></p>
  <pre><code>Can't find 'action.yml', 'action.yaml' or 'Dockerfile' under
  '/home/runner/work/_actions/GoogleCloudPlatform/github-actions/master/setup-gcloud'.
  Did you forget to run actions/checkout before running your local
  action?
  </code></pre>
  </blockquote>
  <p>May I know how to fix this</p>
  <p>This is the sample .yml file I am using.</p>
  <pre><code>name: Release to Development
  
  on:
    push:
      branches:
        - 'master'
  jobs:
    setup-build-publish-deploy:
      name: Setup, Build, Publish, and Deploy
      runs-on: ubuntu-latest
      steps:
  
      - name: Checkout
        uses: actions/checkout@v2
  
      # Setup gcloud CLI
      - uses: GoogleCloudPlatform/github-actions/setup-gcloud@master
        with:
          version: '270.0.0'
          service_account_email: ${{ secrets.GCLOUD_EMAIL_DEV }}
          service_account_key: ${{ secrets.GCLOUD_AUTH_DEV }}
  
      # Configure docker to use the gcloud command-line tool as a credential helper
      - run: |
          # Set up docker to authenticate
          # via gcloud command-line tool.
          gcloud auth configure-docker
  
      # Build the Docker image
      - name: Build
        run: |
          docker build -t &quot;$REGISTRY_HOSTNAME&quot;/&quot;$GKE_PROJECT&quot;/&quot;$IMAGE&quot;:&quot;$GITHUB_SHA&quot; \
            --build-arg GITHUB_SHA=&quot;$GITHUB_SHA&quot; \
            --build-arg GITHUB_REF=&quot;$GITHUB_REF&quot; .
  
      # Push the Docker image to Google Container Registry
      - name: Publish
        run: |
          docker push $REGISTRY_HOSTNAME/$GKE_PROJECT/$IMAGE:$GITHUB_SHA
  
      # Set up kustomize
      - name: Set up Kustomize
        run: |
          curl -o kustomize --location https://github.com/kubernetes-sigs/kustomize/releases/download/v3.1.0/kustomize_3.1.0_linux_amd64
          chmod u+x ./kustomize
  
      # Deploy the Docker image to the GKE cluster
      - name: Deploy
        run: |
  </code></pre>
  <p>Here's the snippet of error.
  <a href="https://i.stack.imgur.com/l7Y1K.png" rel="noreferrer"><img src="https://i.stack.imgur.com/l7Y1K.png" alt="enter image description here" /></a></p>