feat(docker): añadir Dockerfile para contenerizar la aplicación

docker/nginx.conf

@@ -0,0 +1,30 @@
+server {
+    listen 80;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # SPA — React Router
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Cache de assets con hash de Vite
+    location /assets/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 256;
+    gzip_types
+        text/plain
+        text/css
+        application/json
+        application/javascript
+        text/xml
+        application/xml
+        image/svg+xml;
+}