Add helm-dependency example demonstrating customization of OTS chart

README.md

@@ -12,5 +12,6 @@ to explore ArgoCD and GitOps!
 | [jsonnet-guestbook](jsonnet-guestbook/) | The guestbook application as a raw jsonnet |
 | [kustomize-guestbook](kustomize-guestbook/) | The guestbook application as a kustomize app |
 | [pre-post-sync](pre-post-sync/) | Demonstrates Argo CD PreSync and PostSync hooks |
+| [helm-dependency](helm-dependency/) | Demonstrates how to customize an OTS (off-the-shelf) helm chart from an upstream repo |
 | [blue-green-deploy](blue-green-deploy/) | Demonstrates an Argo CD Sync hook which performs a blue/green deployment |
 | [sock-shop](sock-shop/) | A microservices demo application (https://microservices-demo.github.io) |

helm-dependency/Chart.yaml

@@ -0,0 +1 @@
+name: wordpress

helm-dependency/README.md

@@ -0,0 +1,26 @@
+# Helm Dependencies
+
+This example application demonstrates how an OTS (off-the-shelf) helm chart can be retrieved and
+pinned to a specific helm sem version from an upstream helm repository, and customized using a custom
+values.yaml in the private git repository.
+
+In this example, the wordpress application is pulled from the stable helm repo, and pinned to v5.0.2:
+
+```yaml
+dependencies:
+- name: wordpress
+  version: 5.0.2
+  repository: https://kubernetes-charts.storage.googleapis.com
+```
+
+A custom values.yaml is used to customize the parameters of the wordpress helm chart:
+
+```yaml
+wordpress:
+  wordpressPassword: foo
+  mariadb:
+    db:
+      password: bar
+    rootUser:
+      password: baz
+```

helm-dependency/requirements.yaml

@@ -0,0 +1,4 @@
+dependencies:
+- name: wordpress
+  version: 5.0.2
+  repository: https://kubernetes-charts.storage.googleapis.com

helm-dependency/values.yaml

@@ -0,0 +1,7 @@
+wordpress:
+  wordpressPassword: foo
+  mariadb:
+    db:
+      password: bar
+    rootUser:
+      password: baz