Added kubernetes to Mailu

docs/kubernetes/mailu/webdav-ingress.yaml

@@ -0,0 +1,46 @@
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: mailu-webdav-ingress
+  namespace: mailu-mailserver
+  annotations:
+    kubernetes.io/tls-acme: "true"
+    nginx.ingress.kubernetes.io/proxy-body-size: "0"
+    certmanager.k8s.io/cluster-issuer: letsencrypt-stage
+    #ingress.kubernetes.io/auth-url: http://admin.mailu-mailserver.svc.cluster.local/internal/auth/basic
+    ingress.kubernetes.io/configuration-snippet: |
+      rewrite ^/webdav/(.*) /$1 break;
+      auth_request /internal/auth/basic;
+      proxy_set_header Host $http_host;
+      proxy_set_header X-Real-IP $remote_addr;
+      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+      auth_request_set $user $upstream_http_x_user;
+      proxy_set_header X-Remote-User $user;
+      proxy_set_header X-Script-Name /webdav;
+    ingress.kubernetes.io/server-snippet: |
+      location /internal {
+        internal;
+
+        proxy_set_header Authorization $http_authorization;
+        proxy_pass_header Authorization;
+        proxy_pass http://admin.mailu-mailserver.svc.cluster.local;
+        proxy_pass_request_body off;
+        proxy_set_header Content-Length "";
+      }
+  labels:
+    app: mailu
+    role: mail
+    tier: frontend
+spec:
+  tls:
+  - hosts:
+    - "mail.example.com"
+    secretName: letsencrypt-certs-all # If unsure how to generate these, check out https://github.com/ployst/docker-letsencrypt
+  rules:
+  - host: "mail.example.com"
+    http:
+      paths:
+      - path: "/webdav"
+        backend:
+          serviceName: webdav
+          servicePort: 5232