Update 'ubuntu-minum.md'

ubuntu-minum.md

@@ -216,4 +216,41 @@ Verify auto-renewal:
 sudo certbot renew --dry-run
 ```
 
----
+---
+
+
+## 12. Install NVM and Node.js 20
+### **Step 1: Install NVM**
+```bash
+curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.5/install.sh | bash
+```
+Reload shell configuration:
+```bash
+source ~/.bashrc  # For Bash users
+source ~/.zshrc   # For Zsh users
+```
+Verify NVM installation:
+```bash
+nvm --version
+```
+
+### **Step 2: Install Node.js 20**
+```bash
+nvm install 20
+```
+Set Node.js 20 as the default version:
+```bash
+nvm use 20
+nvm alias default 20
+```
+Verify Node.js installation:
+```bash
+node -v
+npm -v
+```
+
+---
+
+## **Done! 🎉**
+Your Ubuntu system is now **updated, secured, and configured with a sudo user, MySQL, NGINX, PHP 8.3, phpMyAdmin, UFW firewall, Code Server, SSL with Let's Encrypt, NVM, and Node.js 20.**
+