gcloud-build.yml

# more details this workflow and other at https://github.com/didier-durand/gcloud-tests
name: Cloud Build for Docker image

on:  

  workflow_dispatch:
    inputs:

  push:
    #protection to avoid triggering when other workflow is modified
    paths: 
    - '!.github/workflows/**'
    - '.github/workflows/gcloud-build.yml'
    
  schedule:
    - cron:  '30 2 * * MON' 

env:
  GCP_VERBOSITY: warning
  GCR_IMAGE: test-alpine
  GCB_DIR: cloud-build-dir

jobs:
  build-on-Google-Cloud-Build:
  
    runs-on: ubuntu-latest 

    steps:
        
    - name: Checkout
      uses: actions/checkout@v2.3.4

    - name: Setup gcloud CLI
      uses: google-github-actions/setup-gcloud@master
      with:
        project_id: ${{ secrets.GCP_PROJECT }}
        service_account_key: ${{ secrets.GCP_SA_KEY }}
        
    - name: Get gcloud version & info
      run: |-
        echo '--- gcloud version ---'
        gcloud version
        echo '--- gcloud info ---'
        gcloud info --anonymize
        
    - name: Build image 
      run: |-
        gcloud builds submit $GCB_DIR --tag="gcr.io/${{ secrets.GCP_PROJECT }}/$GCR_IMAGE:$GITHUB_SHA" --timeout=5m --verbosity=$GCP_VERBOSITY --project=${{ secrets.GCP_PROJECT }} --quiet
        
    - name: List builds
      run: |-
        gcloud builds list --limit=3 --verbosity=$GCP_VERBOSITY --project=${{ secrets.GCP_PROJECT }} --quiet
        
    - name: Describe last build
      run: |-
        #just obtain the build id in text format
        export BUILD_ID=$(gcloud builds list --limit=1 --format="value(id)" --verbosity=$GCP_VERBOSITY --project=${{ secrets.GCP_PROJECT }} --quiet)
        gcloud builds describe $BUILD_ID --verbosity=$GCP_VERBOSITY --project=${{ secrets.GCP_PROJECT }} --quiet
        grep "$BUILD_ID" <<< $(gcloud builds describe $BUILD_ID --verbosity=$GCP_VERBOSITY --project=${{ secrets.GCP_PROJECT }} --quiet)