build_push_gcr.yml

name: Build and Push to Google Container Registry
# create simple trigger based on everytime we create new tag in this repository
on:
  push:
    tags:
      # Push events to every tag including hierarchical tags like v1.0/beta
      - "**"

jobs:
  BuildPush:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Setup Environment Variables
        run: |-
          echo "TAG_NAME=${{ github.ref_name }}" >> "$GITHUB_ENV"
          echo "ILT_NAME=$(echo ${{ github.ref_name }} | cut -d "/" -f1)" >> "$GITHUB_ENV"
          echo "ILT_VERSION=$(echo ${{ github.ref_name}} | cut -d "/" -f2)" >> "$GITHUB_ENV"

      - name: Checkout Code
        uses: actions/checkout@v1

      - name: Login to GCR
        uses: google-github-actions/auth@v1
        with:
          credentials_json: ${{ secrets.SERVICE_ACCOUNT_KEY }}
          project_id: ${{ secrets.GCP_PROJECT_ID }}
          export_default_credentials: true
          
      - name: Build Docker Image
        run: |-
          cd ${{ github.workspace }}/$ILT_NAME
          docker build -t $ILT_NAME:$ILT_VERSION -f ./Dockerfile.prod .
        
      - name: Configure Docker Client
        run: gcloud auth configure-docker --quiet
        
      - name: Push Docker Image to Google Container Registry
        run: |-
          docker tag $ILT_NAME:$ILT_VERSION gcr.io/$GCP_PROJECT/$ILT_NAME:$ILT_VERSION 
          docker push gcr.io/$GCP_PROJECT/$ILT_NAME:$ILT_VERSION