use GKE action for credentials

ci/google.yml

@@ -8,7 +8,7 @@
 #
 # 3. Change the values for the GKE_ZONE, GKE_CLUSTER, IMAGE, and DEPLOYMENT_NAME environment variables (below).
 #
-# For more support on how to run the workflow, please visit https://github.com/GoogleCloudPlatform/github-actions/tree/master/example-workflows/gke
+# For more support on how to run the workflow, please visit https://github.com/google-github-actions/setup-gcloud/tree/master/example-workflows/gke
 
 name: Build and Deploy to GKE
 
@@ -44,8 +44,11 @@ jobs:
         gcloud --quiet auth configure-docker
 
     # Get the GKE credentials so we can deploy to the cluster
-    - run: |-
-        gcloud container clusters get-credentials "$GKE_CLUSTER" --zone "$GKE_ZONE"
+    - uses: google-github-actions/get-gke-credentials@v0.2.1
+      with:
+        cluster_name: ${{ secrets.GKE_PROJECT }}
+        location: ${{ env.GKE_ZONE }}
+        credentials: ${{ secrets.GKE_SA_KEY }}
 
     # Build the Docker image
     - name: Build