chore: add Docker config for Dokploy deploy

nginx.conf

@@ -0,0 +1,25 @@
+server {
+    listen 80;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # SPA routing — todas las rutas van a index.html
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Cache agresivo para assets con hash en el nombre
+    location /assets/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # No cachear index.html
+    location = /index.html {
+        add_header Cache-Control "no-cache, no-store, must-revalidate";
+    }
+
+    gzip on;
+    gzip_types text/plain text/css application/javascript application/json image/svg+xml;
+    gzip_min_length 1000;
+}