First version with configs from #8

Webserver-Reverse-Proxy.md

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+In order to to expose uptime-kuma to the web securely, it is recommended to proxy it behind a traditional webserver such as nginx or Apache. Below are some example configurations that you could use.
+
+### Nginx
+
+With SSL:
+```nginx
+server {
+  listen 443 ssl http2;
+  server_name sub.domain.com;
+  ssl_certificate     /path/to/ssl/cert/crt;
+  ssl_certificate_key /path/to/ssl/key/key;
+
+  location / {
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_pass           http://localhost:3001/;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection $connection_upgrade;
+  }
+}
+```
+
+Without SSL:
+```nginx
+server  {
+    listen 80;
+    server_name    sub.domain.com;
+    location / {
+        proxy_pass            http://localhost:3001;
+        proxy_http_version    1.1;
+        proxy_set_header      Upgrade $http_upgrade;
+        proxy_set_header      Connection "upgrade";
+        proxy_set_header      Host $host;
+    }
+}
+```
+
+### Apache
+Without SSL:
+```apache
+<VirtualHost *:443>
+  ServerName sub.domain.com
+  SSLEngine On
+  SSLCertificateFile /path/to/ssl/cert/crt
+  SSLCertificateKeyFile /path/to/ssl/key/key
+  # Protocol 'h2' is only supported on Apache 2.4.17 or newer.
+  Protocols h2 http/1.1
+
+  ProxyPass / http://localhost:3001/
+  RewriteEngine on
+  RewriteCond %{HTTP:Upgrade} websocket [NC]
+  RewriteCond %{HTTP:Connection} upgrade [NC]
+  RewriteRule ^/?(.*) "ws://localhost:3001/$1" [P,L]
+</VirtualHost>
+```
+
+Without SSL:
+```apache
+<VirtualHost *:80>
+  ServerName sub.domain.com
+
+  ProxyPass / http://localhost:3001/
+  RewriteEngine on
+  RewriteCond %{HTTP:Upgrade} websocket [NC]
+  RewriteCond %{HTTP:Connection} upgrade [NC]
+  RewriteRule ^/?(.*) "ws://localhost:3001/$1" [P,L]
+</VirtualHost>
+```
+
+### Caddy
+
+```nginx
+subdomain.domain.com {
+    reverse_proxy 127.0.0.1:3001 :
+}
+```