Add Prometheus and Grafana services with alerting configuration

alertmanager.yml

@@ -0,0 +1,17 @@
+global:
+  smtp_smarthost: 'smtp.example.com:587'
+  smtp_from: 'alertmanager@example.com'
+  smtp_auth_username: 'alertmanager'
+  smtp_auth_password: 'dummy_password'
+
+route:
+  group_by: ['alertname']
+  group_wait: 10s
+  group_interval: 10s
+  repeat_interval: 1h
+  receiver: 'email'
+
+receivers:
+  - name: 'email'
+    email_configs:
+      - to: 'admin@example.com'