This configuration will run yii2 advanced app in multiple ports, 8081 for frontend and 8082 for backend.
YII_FOLDER=/home/ubuntu/workspace/project-folder
sed -i -e "s~:yii_folder~${YII_FOLDER}~g" *.conf
sudo ln -s $(pwd)/002-front.conf /etc/apache2/sites-enabled
sudo ln -s $(pwd)/003-backend.conf /etc/apache2/sites-enabled