feat(documentation): Added readme content and adjusted config

Headscale/ingress.yml

@@ -2,9 +2,15 @@ apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: headscale
+  annotations:
+    cert-manager.io/cluster-issuer: "letsencrypt-production"
 spec:
+  tls:
+    - hosts:
+        - <headscale url>
+      secret-name: headscale-tls
   rules:
-    - host: headscale.foxhawk.co.uk
+    - host: <headscale url>
       http:
         paths:
           - pathType: Prefix