How to run composer install into .cpanel.yml file

Hi, i try run composer install in to .cpanel.yml file but doesn't work here my file .cpanel.yml deployment: tasks: - export DEPLOYPATH=/home/sisjgcom/testing.servisuministrosjg.co/ - /bin/cp .env.production $DEPLOYPATH/.env - /bin/cp -R ./ $DEPLOYPATH - $DEPLOYPATH/composer install thanks