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kustomize/components/container-images-registry/README.md

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+# Update the container registry of the Online Boutique apps
+
+By default, Online Boutique's services' container images are pulled from a public container registry (`us-central1-docker.pkg.dev/google-samples/microservices-demo`). One best practice is to have these container images in your own private container registry. The Kustomize variation in this folder can help with using your own private container registry.
+
+## Change the default container registry via Kustomize
+
+To automate the deployment of Online Boutique integrated with your own container registry, you can leverage the following variation with [Kustomize](../..).
+
+From the `kustomize/` folder at the root level of this repository, execute this command:
+
+```bash
+REGISTRY=my-registry # Example: us-central1-docker.pkg.dev/my-project/my-directory
+sed -i "s|CONTAINER_IMAGES_REGISTRY|${REGISTRY}|g" components/container-images-registry/kustomization.yaml
+kustomize edit add component components/container-images-registry
+```
+
+_Note: this Kustomize component will update the container registry in the `image:` field in all `Deployments`._
+
+This will update the `kustomize/kustomization.yaml` file which could be similar to:
+
+```yaml
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- base
+components:
+- components/container-images-registry
+```
+
+You can (optionally) locally render these manifests by running `kubectl kustomize .`.
+You can deploy them by running `kubectl apply -k .`.

kustomize/components/container-images-registry/kustomization.yaml

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+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: kustomize.config.k8s.io/v1alpha1
+kind: Component
+images:
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/adservice
+  newName: CONTAINER_IMAGES_REGISTRY/adservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/cartservice
+  newName: CONTAINER_IMAGES_REGISTRY/cartservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/checkoutservice
+  newName: CONTAINER_IMAGES_REGISTRY/checkoutservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/currencyservice
+  newName: CONTAINER_IMAGES_REGISTRY/currencyservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/emailservice
+  newName: CONTAINER_IMAGES_REGISTRY/emailservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/frontend
+  newName: CONTAINER_IMAGES_REGISTRY/frontend
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/loadgenerator
+  newName: CONTAINER_IMAGES_REGISTRY/loadgenerator
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/paymentservice
+  newName: CONTAINER_IMAGES_REGISTRY/paymentservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/productcatalogservice
+  newName: CONTAINER_IMAGES_REGISTRY/productcatalogservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/recommendationservice
+  newName: CONTAINER_IMAGES_REGISTRY/recommendationservice
+- name: us-central1-docker.pkg.dev/google-samples/microservices-demo/shippingservice
+  newName: CONTAINER_IMAGES_REGISTRY/shippingservice
+- name: redis
+  newName: CONTAINER_IMAGES_REGISTRY/redis