Doc: add requirements for deployments

[BastLeblanc]

Hints:

Prerequisites for setting up a fresh EC2 instance for the Retail Demo Store. These install prerequisites apply to the Ubuntu AMI.

1. Ensure the instance is up-to-date:
   sudo apt update
   sudo apt upgrade

2. Verify Python:
   python3 -V
   s/b: Python 3.12.3 or higher
   If not: sudo apt install python3

3. Install Git and clone repo:
   sudo apt install git
   mkdir RetailDemoStore
   cd RetailDemoStore/
   git init
   git clone https://github.com/codyshive/retail-demo-store

4. Install and configure the AWS CLI:
   curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
   unzip
   sudo ./aws/install
   (remove the old install)
   aws configure

5. Packages required for building staging:
   sudo apt install zip
   sudo apt install python3-pip
   sudo apt install python3.12-venv
   sudo apt install nodejs
   sudo apt install npm

Ancillary (but nice, if you plan to use any graphical tools like Visual Studio Code). This lets you work with your EC2 Ubuntu instance through X Windows using Remote Desktop:
sudo apt install xfce4 xfce4-goodies -y
sudo systemctl status xrdp
sudo apt install xrdp -y
sudo systemctl status xrdp
--Make sure it's running
Add port 3389 (RDP) to your EC2's SG

If you need to change settings:
sudo nano /etc/xrdp/xrdp.ini

Start/stop:
sudo systemctl restart xrdp

Set ubuntu password (so you can log-on with it through RDP):
sudo passwd ubuntu

Connect with Remote Desktop.