gke-prod.yml

# This workflow will build a docker container, publish it to Google Container Registry, and deploy it to GKE when a release is created
#
# To configure this workflow:
#
# 1. Ensure that your repository contains the necessary configuration for your Google Kubernetes Engine cluster, including deployment.yml, kustomization.yml, service.yml, etc.
#
# 2. Set up secrets in your workspace: GKE_PROJECT with the name of the project, GKE_EMAIL with the service account email, GKE_KEY with the Base64 encoded JSON service account key (https://github.com/GoogleCloudPlatform/github-actions/tree/docs/service-account-key/setup-gcloud#inputs).
#
# 3. Change the values for the GKE_ZONE, GKE_CLUSTER, IMAGE, REGISTRY_HOSTNAME and DEPLOYMENT_NAME environment variables (below).

name: Build and push image to GKE Prod

on:
  push:
    tags:        
      - v\d+\.\d+\.\d+
      - '!v*\.*\.*-rc'
      - '!v*\.*\.*-rc\.*'
      - '!v*\.*\.*-alpha'
      - '!v*\.*\.*-alpha\.*'

# Environment variables available to all jobs and steps in this workflow
env:
  GKE_PROJECT: ${{ secrets.GKE_PROJECT }}
  GKE_EMAIL: ${{ secrets.GKE_EMAIL }}
  GITHUB_SHA: ${{ github.sha }}
  IMAGE: ${{ secrets.IMAGE }}
  REGISTRY_HOSTNAME: gcr.io

jobs:
  setup-build-publish-deploy:
    name: Setup, Build, and Publish
    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.GKE_EMAIL }}
        service_account_key: ${{ secrets.GKE_KEY }}

    - run: |
        echo ${{github.ref}}
        echo ${{github.head_ref}}
        echo ${{github.base_ref}}
   
    # 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 & Push the Docker image
    - name:  Build & Push 
      run: |
        docker build -t $REGISTRY_HOSTNAME/$GKE_PROJECT/$IMAGE:${GITHUB_SHA} .   
        docker push $REGISTRY_HOSTNAME/$GKE_PROJECT/$IMAGE:${GITHUB_SHA}

    - name:  Add tag
      run: |
        gcloud container images add-tag $REGISTRY_HOSTNAME/$GKE_PROJECT/$IMAGE:${GITHUB_SHA} $REGISTRY_HOSTNAME/$GKE_PROJECT/$IMAGE:${GITHUB_REF##*/}