Install WKHTML2PDF in Ubuntu 18.04

INSTALL_WKHTMLTOPDF="True"
WKHTMLTOX_X64=https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.bionic_amd64.deb

sudo apt-get install wget git bzr python-pip gdebi-core -y

sudo wget http://ftp.us.debian.org/debian/pool/main/libp/libpng/libpng12-0_1.2.49-1+deb7u2_amd64.deb

sudo dpkg -i libpng12-0_1.2.49-1+deb7u2_amd64.deb

if [ $INSTALL_WKHTMLTOPDF = "True" ]; then
  echo -e "\n---- Install wkhtml and place shortcuts on correct place for ODOO 11 ----"
  #pick up correct one from x64 & x32 versions:
  if [ "`getconf LONG_BIT`" == "64" ];then
      _url=$WKHTMLTOX_X64
  else
      _url=$WKHTMLTOX_X32
  fi
  sudo wget $_url
  sudo gdebi --n `basename $_url`
  sudo ln -s /usr/local/bin/wkhtmltopdf /usr/bin
  sudo ln -s /usr/local/bin/wkhtmltoimage /usr/bin
else
  echo "Wkhtmltopdf isn't installed due to the choice of the user!"
fi