docs: add NGINX deployment guide with Docker setup

website/docs/deployment/nginx.mdx

@@ -0,0 +1,88 @@
+---
+sidebar_label: NGINX
+description: Deploy your Docusaurus app on an NGINX server.
+---
+
+# Deploying to NGINX
+
+Deploying your Docusaurus project to [NGINX](https://nginx.org/) gives you full control over your hosting environment and is a great choice for production deployments.
+
+## Build your site
+
+```bash
+npm run build
+```
+
+This generates static files in the `build/` directory.
+
+## Basic NGINX configuration
+
+Create an NGINX server block configuration file:
+
+```nginx title="nginx.conf"
+server {
+    listen 80;
+    server_name example.com;
+
+    root /var/www/docusaurus/build;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ $uri.html /404.html;
+    }
+
+    # Enable gzip compression
+    gzip on;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml text/javascript;
+    gzip_min_length 1000;
+
+    # Cache static assets
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 30d;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+}
+```
+
+## Dockerized NGINX deployment
+
+Create a `Dockerfile` in your project root:
+
+```dockerfile title="Dockerfile"
+FROM nginx:alpine
+
+COPY build /usr/share/nginx/html
+
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]
+```
+
+Build and run the container:
+
+```bash
+docker build -t docusaurus-app .
+docker run -d -p 80:80 docusaurus-app
+```
+
+## Single-page application routing
+
+Docusaurus generates static files, but client-side routing needs proper fallback handling. The `try_files` directive in the NGINX config above redirects all unknown paths to `404.html`.
+
+For custom 404 pages or SPA-style fallback routing, ensure your NGINX config includes:
+
+```nginx
+error_page 404 /404.html;
+location = /404.html {
+    internal;
+}
+```
+
+Now your Docusaurus site is live and served by NGINX.

website/sidebars.ts

@@ -100,6 +100,7 @@ const sidebars: SidebarsConfig = {
             'deployment/github-pages',
             'deployment/netlify',
             'deployment/vercel',
+            'deployment/nginx',
           ],
         },
         {