Step 5: Download Odoo 18

Create a user for Odoo and switch to that user:

sudo adduser --system --home=/opt/odoo --group odoo
sudo su - odoo -s /bin/bash

Clone the Odoo 18 repository from GitHub.

cd /opt/odoo
sudo git clone https://www.github.com/odoo/odoo --depth 1 --branch 18.0 /opt/odoo/odoo18
sudo git clone https://www.github.com/odoo/enterprise --depth 1 --branch 18.0 /opt/odoo/odoo18/enterprise