#1 Optimize node script and add gulp as a script

php-7.0/Dockerfile

php-7.0/gulp

php-7.0/node

php-7.0/npm

php-7.1/Dockerfile

php-7.1/gulp

php-7.1/node

php-7.1/npm

php-7.2/Dockerfile

php-7.2/gulp

php-7.2/node

php-7.2/npm