argocd: Deploy Argo CD

[Argo CD] is a Kubernetes-native GitOps/continuous deployment manager.
It monitors the state of Kubnernetes resources, such as Pods,
Deployments, ConfigMaps, Secrets, and Custom Resources, and synchronizes
them with their canonical definitions from a Git repository.

*Argo CD* consists of various components, including a Repository
Service, an Application Controller, a Notification Controller, and an
API server/Web UI.  It also has some optional components, such as a
bundled Dex server for authentication/authorization, and an
ApplicationSet controller, which we will not be using.

[Argo CD]: https://argo-cd.readthedocs.io/

argocd/ingress.yaml

@@ -0,0 +1,25 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: argocd-server-ingress
+  namespace: argocd
+  annotations:
+    kubernetes.io/ingress.class: nginx
+    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
+    nginx.ingress.kubernetes.io/ssl-passthrough: "true"
+    nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
+spec:
+  rules:
+  - host: argocd.pyrocufflink.blue
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: argocd-server
+            port:
+              name: https
+  tls:
+  - hosts:
+    - argocd.example.com