[IMP] adapt documentation for new install script

closes odoo/documentation#9543

X-original-commit: 109c82776a
Related: odoo/odoo#167334
Signed-off-by: Xavier Dollé (xdo) <xdo@odoo.com>

content/administration/on_premise/source.rst

@@ -273,18 +273,23 @@ Dependencies
 
          .. tab:: Debian/Ubuntu
 
-            For Debian-based systems, the packages are listed in the `debian/control
-            <{GITHUB_PATH}/debian/control>`_ file of the Odoo sources.
-
             On Debian/Ubuntu, the following commands should install the required packages:
 
             .. code-block:: console
 
-               $ cd /CommunityPath
-               $ sed -n -e '/^Depends:/,/^Pre/ s/ python3-\(.*\),/python3-\1/p' debian/control | sudo xargs apt-get install -y
+               $ cd odoo #CommunityPath
+               $ sudo ./setup/debinstall.sh
+
+            The `setup/debinstall.sh` script will parse the `debian/control` and install found
+            packages.
 
          .. tab:: Install with pip
 
+            .. warning::
+
+               Using pip may lead to security issue and broken dependencies, only do this if you
+               know what you are doing.
+
             As some of the Python packages need a compilation step, they require system libraries to
             be installed.