part2 is done (with volumes and a different index for each service)

p2/confs/app3.yaml

@@ -0,0 +1,42 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: app3-deployment
+  labels:
+    app: app3
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: app3
+  template:
+    metadata:
+      labels:
+        app: app3
+    spec:
+      containers:
+      - name: app3
+        image: nginx:1.14.2
+        volumeMounts:
+          - name: indexes 
+            mountPath: /usr/share/nginx/html/index.html
+            subPath: app3
+      volumes:
+        - name: indexes
+          configMap:
+            name: indexes
+            items:
+              - key: app3
+                path: app3
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: app3-service
+spec:
+  type: NodePort
+  selector:
+    app: app3
+  ports:
+    - port: 80
+      targetPort: 80