Added nginx with sub-path example

Proxy-examples.md

@@ -173,6 +173,91 @@ server {
 ```
 </details>
 
+<details>
+<summary>Nginx with sub-path (by BlackDex)</summary><br/>
+
+In this example bitwarden_rs will be available via https://bitwarden.example.tld/vault/<br/>
+If you want to use any other sub-path, like `bitwarden` or `secret-vault` you should change `/vault/` in the example below to match.<br/>
+<br/>
+For this to work you need to configure your `DOMAIN` variable to match so it should look like:
+
+```ini
+; Add the sub-path! Else this will not work!
+DOMAIN=https://bitwarden.example.tld/vault/
+```
+
+```nginx
+# Define the server IP and ports here.
+upstream bitwardenrs-default { server 127.0.0.1:8080; }
+upstream bitwardenrs-ws { server 127.0.0.1:3012; }
+
+# Redirect HTTP to HTTPS
+server {
+    listen 80;
+    listen [::]:80;
+    server_name bitwardenrs.example.tld;
+    return 301 https://$host$request_uri;
+}
+
+server {
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
+    server_name bitwardenrs.example.tld;
+
+    # Specify SSL Config when needed
+    #ssl_certificate /path/to/certificate/letsencrypt/live/bitwardenrs.example.tld/fullchain.pem;
+    #ssl_certificate_key /path/to/certificate/letsencrypt/live/bitwardenrs.example.tld/privkey.pem;
+    #ssl_trusted_certificate /path/to/certificate/letsencrypt/live/bitwardenrs.example.tld/fullchain.pem;
+
+    client_max_body_size 128M;
+
+    ## Using a Sub Path Config
+    # Path to the root of your installation
+    location /vault/ {
+      proxy_set_header Host $host;
+      proxy_set_header X-Real-IP $remote_addr;
+      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+      proxy_set_header X-Forwarded-Proto $scheme;
+
+      proxy_pass http://bitwardenrs-default;
+    }
+
+    location /vault/notifications/hub/negotiate {
+      proxy_set_header Host $host;
+      proxy_set_header X-Real-IP $remote_addr;
+      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+      proxy_set_header X-Forwarded-Proto $scheme;
+
+      proxy_pass http://bitwardenrs-default;
+    }
+
+    location /vault/notifications/hub {
+      proxy_set_header Upgrade $http_upgrade;
+      proxy_set_header Connection $http_connection;
+      proxy_set_header X-Real-IP $remote_addr;
+
+      proxy_pass http://bitwardenrs-ws;
+    }
+
+    # Optionally add extra authentication besides the ADMIN_TOKEN
+    # If you don't want this, leave this part out
+    location ^~ /vault/admin {
+      # See: https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-http-basic-authentication/
+      auth_basic "Private";
+      auth_basic_user_file /path/to/htpasswd_file;
+
+      proxy_set_header Host $host;
+      proxy_set_header X-Real-IP $remote_addr;
+      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+      proxy_set_header X-Forwarded-Proto $scheme;
+
+      proxy_pass http://bitwardenrs-default;
+    }
+
+}
+```
+</details>
+
 <details>
 <summary>Nginx (by ypid)</summary><br/>