Don't need an external Kustomize

.github/workflows/test-on-pr.yaml

@@ -68,10 +68,6 @@ jobs:
         with:
           cluster_name: minimal-cluster
           location: europe-west9
-      - name: Install kustomize
-        run: |
-          curl -s "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh" | bash
-          sudo mv kustomize /usr/local/bin
       - name: Edit image tag with GitHub Run ID
         run: (cd kubernetes && kustomize edit set image ghcr.io/ajavageek/vcluster-pipeline=:${{github.run_id}})
       - name: Install vCluster
@@ -120,9 +116,7 @@ jobs:
             --docker-username="${{ github.actor }}" --docker-password="${{ secrets.GITHUB_TOKEN }}" \
             --dry-run=client -o yaml | kubectl apply -f -
       - name: Deploy Kustomized manifest to Google Cloud
-        run: |
-          kustomize build kubernetes > manifest.yml
-          kubectl apply -f manifest.yml
+        run: kubectl apply -k kubernetes
       - name: Retrieve LoadBalancer external IP inside the vCluster
         run: |
           for i in {1..10}; do