chore(container): remove obsolete nginx.conf; docs: update references from Nginx to Caddy

README.md

@@ -243,7 +243,7 @@ make docker-run
 The Docker setup includes:
 
 - **Multi-stage build** for optimized images
-- **Nginx** for serving the built application
+- **Caddy** for serving the built application
 - **Health checks** for monitoring
 - **Environment variable support**
 

nginx.conf

@@ -1,49 +0,0 @@
-server {
-    listen 80;
-    server_name localhost;
-    root /usr/share/nginx/html;
-    index index.html;
-
-    # Enable gzip compression
-    gzip on;
-    gzip_vary on;
-    gzip_min_length 1024;
-    gzip_proxied expired no-cache no-store private auth;
-    gzip_types
-        text/plain
-        text/css
-        text/xml
-        text/javascript
-        application/javascript
-        application/xml+rss
-        application/json;
-
-    # Security headers
-    add_header X-Frame-Options "SAMEORIGIN" always;
-    add_header X-Content-Type-Options "nosniff" always;
-    add_header X-XSS-Protection "1; mode=block" always;
-    add_header Referrer-Policy "no-referrer-when-downgrade" always;
-
-    # Handle React Router (SPA)
-    location / {
-        try_files $uri $uri/ /index.html;
-    }
-
-    # Cache static assets
-    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
-        expires 1y;
-        add_header Cache-Control "public, immutable";
-    }
-
-    # Health check endpoint
-    location /health {
-        access_log off;
-        return 200 "healthy\n";
-        add_header Content-Type text/plain;
-    }
-
-    # Disable access to hidden files
-    location ~ /\. {
-        deny all;
-    }
-}