Use creds from previous step

Author: ColeDCrawford

.github/workflows/docker-build.yml

@@ -96,23 +96,12 @@ jobs:
           token_format: "access_token"
           create_credentials_file: true
 
-      - name: Print authentication info
+      - name: Activate service account credentials
         run: |
-          echo "Current authentication:"
-          gcloud auth list
-          # Print service account IAM bindings
-          echo "Service account IAM bindings:"
-          gcloud iam service-accounts get-iam-policy ${{ secrets.SUNSETTING_GCP_SERVICE_ACCOUNT }}
-
-      - name: Impersonate service account
-        run: |
-          # Get the service account email
-          SA_EMAIL="${{ secrets.SUNSETTING_GCP_SERVICE_ACCOUNT }}"
-
-          echo "Impersonating service account: $SA_EMAIL"
-          gcloud config set auth/impersonate_service_account $SA_EMAIL
+          echo "Activating service account credentials"
+          gcloud auth login --brief --cred-file="${{ steps.auth.outputs.credentials_file_path }}"
 
-          echo "Authentication after impersonation:"
+          echo "Verifying authentication:"
           gcloud auth list
 
       - name: Deploy to Google Cloud
@@ -129,6 +118,4 @@ jobs:
             --image ${IMAGE_REPO}:${IMAGE_TAG} \
             --region ${{ env.GCP_REGION }}
             --service-account ${{ secrets.SUNSETTING_GCP_SERVICE_ACCOUNT }} \
-            --verbosity=debug
-          echo "Deployed version `latest` (should be same as ${{ github.event.release.tag_name }}) to Google Cloud Run \
-          service ${{ env.GCP_SERVICE_NAME }} in region ${{ env.GCP_REGION }}"
+          echo "Deployed version `latest` (should be same as ${{ github.event.release.tag_name }}) to Google Cloud Run service ${{ env.GCP_SERVICE_NAME }} in region ${{ env.GCP_REGION }}"