git clone --branch 15.0 --depth 1 https://github.com/odoo/odoo.git odoo15
cd odoo15
pip3 install -r requirements.txt

Crear Base de datos

Inicializar base de datos

python3 odoo-bin -r admin -w adminpwd --addons-path=addons -d odoo15 --db_host localhost -i all
OR
./odoo-bin --database=codingdodo_demo --db_user=odoo --db_password=codingdodo -i base --without-demo=all --save -c /home/odoo/.odoorc_codingdodo_demo --stop-after-init

installa buil essentials

sudo apt install build-essential
sudo apt-get install libxml2-dev libxslt1-dev python3-dev
sudo apt-get install libsasl2-dev python-dev libldap2-dev libssl-dev

pip3 install psycopg2-binary

Si da el siguiente error:

error in vatnumber setup command: use_2to3 is invalid.

aplicar el siguiente comando:

pip3 install "setuptools<58.0"

sudo apt install postgresql
sudo su - postgres -c "createuser -s odoo"
wget https://github.com/odoo/wkhtmltopdf/releases/download/nightly/wkhtmltox_0.13.0-1.nightly.jammy_amd64.deb
sudo dpkg -i wkhtmltox_0.13.0-1.nightly.jammy_amd64.deb
sudo apt install -f
sudo apt install -y build-essential wget python3-dev python3-venv python3-wheel libfreetype6-dev libxml2-dev libzip-dev libldap2-dev libsasl2-dev python3-setuptools node-less libjpeg-dev zlib1g-dev libpq-dev libxslt1-dev libldap2-dev libtiff5-dev libjpeg8-dev libopenjp2-7-dev liblcms2-dev libwebp-dev libharfbuzz-dev libfribidi-dev libxcb1-dev
sudo useradd -m -d /opt/odoo -U -r -s /bin/bash odoo
sudo passwd odoo