ci: auth to google registry

Author: Raymond Ottun

.github/workflows/ci.yaml

@@ -104,13 +104,18 @@ jobs:
         with:
           ref: 'main'
 
-      - name: Authenticate with Google Cloud
+      - id: auth
+        name: Authenticate with Google Cloud
         uses: google-github-actions/auth@v1
         with:
           credentials_json: '${{ secrets.GOOGLE_CREDENTIALS }}'
 
-      - name: Configure Docker
-        uses: docker/setup-buildx-action@v1
+      - name: Login to GCR
+        uses: docker/login-action@v2
+        with:
+          registry: gcr.io
+          username: oauth2accesstoken
+          password: ${{ steps.auth.outputs.access_token }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v2