Tidy up the examples repo + add a Helm hooks examples (#40)

helm-hooks/manifests.yaml

@@ -0,0 +1,82 @@
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: upgrade-sql-schema
+  annotations:
+    helm.sh/hook: pre-install
+    helm.sh/hook-weight: "-2"
+spec:
+  template:
+    spec:
+      containers:
+        - name: upgrade-sql-schema
+          image: alpine:latest
+          command: ["sleep", "5"]
+      restartPolicy: Never
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: maint-page-up
+  annotations:
+    helm.sh/hook: pre-install
+    helm.sh/hook-delete-policy: before-hook-creation
+    helm.sh/hook-weight: "-1"
+spec:
+  template:
+    spec:
+      containers:
+        - name: page-up
+          image: alpine:latest
+          command: ["sleep", "2"]
+      restartPolicy: Never
+  backoffLimit: 0
+---
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: frontend
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      tier: frontend
+  template:
+    metadata:
+      labels:
+        tier: frontend
+    spec:
+      containers:
+        - name: main
+          image: nginx:latest
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+  annotations:
+    helm.sh/hook-weight: "2"
+spec:
+  selector:
+    tier: frontend
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: maint-page-down
+  annotations:
+    helm.sh/hook: post-install
+    helm.sh/hook-delete-policy: before-hook-creation
+spec:
+  template:
+    spec:
+      containers:
+        - name: page-down
+          image: alpine:latest
+          command: ["sleep", "2"]
+      restartPolicy: Never