Divide Eventwatcher examples into multiple files

docs/content/en/docs/user-guide/configuration-reference.md

@@ -152,7 +152,7 @@ One of `yamlField` or `regex` is required.
 
 | Field | Type | Description | Required |
 |-|-|-|-|
-| file | string | The path to the file to be updated. | Yes |
+| file | string | The relative path from the repository root to the file to be updated. | Yes |
 | yamlField | string | The yaml path to the field to be updated. It requires to start with `$` which represents the root element. e.g. `$.foo.bar[0].baz`. | No |
 | regex | string | The regex string that specify what should be replaced. The only first capturing group enclosed by `()` will be replaced with the new value. e.g. `host.xz/foo/bar:(v[0-9].[0-9].[0-9])` | No |
 

docs/content/en/docs/user-guide/event-watcher.md

@@ -156,7 +156,7 @@ spec:
 +     version: 0.2.0
 ```
 
-See [here](https://github.com/pipe-cd/examples/blob/master/.pipe/event-watcher.yaml) for more examples.
+See [here](https://github.com/pipe-cd/examples/blob/master/.pipe) for more examples.
 
 ## Github Actions
 If you're using Github Actions in your CI workflow, [actions-event-register](https://github.com/marketplace/actions/pipecd-register-event) is for you!

examples/.pipe/event-watcher-helm.yaml

@@ -0,0 +1,9 @@
+apiVersion: pipecd.dev/v1beta1
+kind: EventWatcher
+spec:
+  events:
+    # For those who want to update the deployment config file when releasing a new Helm package.
+    - name: helm-release
+      replacements:
+        - file: kubernetes/helm-remote-chart/.pipe.yaml
+          yamlField: $.spec.input.helmChart.version

examples/.pipe/event-watcher-k8s.yaml

@@ -0,0 +1,17 @@
+apiVersion: pipecd.dev/v1beta1
+kind: EventWatcher
+spec:
+  events:
+    # For those who want to update the manifest file when a new docker image was pushed.
+    - name: image-update
+      replacements:
+        - file: kubernetes/simple/deployment.yaml
+          yamlField: $.spec.template.spec.containers[0].image
+    # For those who want to identify Events using labels.
+    - name: image-update
+      labels:
+        repoId: repo-1
+        appName: simple
+      replacements:
+        - file: kubernetes/simple/deployment.yaml
+          yamlField: $.spec.template.spec.containers[0].image

examples/.pipe/event-watcher-using-regex.yaml

@@ -0,0 +1,9 @@
+apiVersion: pipecd.dev/v1beta1
+kind: EventWatcher
+spec:
+  events:
+    # For those who want to update a file using regex
+    - name: image-update-with-regex
+      replacements:
+        - file: kubernetes/simple/deployment.yaml
+          regex: "image: gcr.io/pipecd/helloworld:(v[0-9].[0-9].[0-9])"