Install wkhtmltopdf with patched QT on Ubuntu Linux

wkhtmltopdf.sh

# Uncomment the next line if you have installed wkhtmltopdf
# sudo apt remove wkhtmltopdf
cd ~
# Select an appropriate link for your system (32 or 64 bit) from the page https://wkhtmltopdf.org/downloads.html and past to the next line
wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
tar xvf wkhtmltox*.tar.xz
sudo mv wkhtmltox/bin/wkhtmlto* /usr/bin
sudo apt-get install -y openssl build-essential libssl-dev libxrender-dev git-core libx11-dev libxext-dev libfontconfig1-dev libfreetype6-dev fontconfig

Using minimalist Debian (TurnkeyLinux Distribution) tar won't have xz installed so error occurs during tar -xfz:

user@odoo ~# tar -xvf wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
tar (child): xz: Cannot exec: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now

Solution is to upgrade tar:

user@odoo ~# apt install xz-utils

Had text rendering problems with any method.
I got it fixed installing with:
sudo apt-get install wkhtmltopdf

thanks