feat: run kustomize action after image is created

.github/workflows/kustomize.yml

@@ -1,17 +1,18 @@
 name: Deploy Kustomize k8s cluster
 
 on:
-  pull_request:
-  push:
-    branches:
-      - 'master'
-      - 'staging'
+  workflow_run:
+    workflows: ["Build and Push Docker image"]
+    branches: [master, staging]
+    types: 
+      - completed
   schedule:
     - cron: '0 0 1 * *'
 
 jobs:
   create-kustomize-cluster:
     runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v2