add option to pip to avoid some warning messages

docker_build.py

@@ -170,7 +170,9 @@
             elif odoo_type in ('odoo10', ):
                 myfile.write(
                     'python-ipdb\n')
-                myfile.write('RUN pip install watchdog')
+                myfile.write(
+                    'RUN pip install watchdog --disable-pip-version-check '
+                    '--system --no-cache-dir --only-binary wheel')
             elif odoo_type in ('odoo7', 'odoo8'):
                 myfile.write(
                     'python-ipdb\n')