Update install

scripts/install

@@ -23,10 +23,10 @@ ynh_setup_source --dest_dir="$install_dir"
 chown -R "$app:www-data" "$install_dir"
 
 pushd
- python3 -m venv venv
+ ynh_exec_as_app $install_dir/python3 -m venv venv
  echo "source $install_dir/.venv/bin/activate" >> $install_dir/.bashrc
- pip install open-webui
- open-webui serve
+ ynh_exec_as_app $install_dir/pip install open-webui
+ ynh_exec_as_app open-webui serve
 popd
 
 chown -R "$app:www-data" "$install_dir"