download
wget https://getcomposer.org/download/1.9.0/composer.phar
The following into the project
Treated with absolute path
sudo /usr/local/php7.2/bin/php composer.phar install
wget https://getcomposer.org/download/1.9.0/composer.phar
sudo /usr/local/php7.2/bin/php composer.phar install