Do not run Composer as root/super user! See https://getcomposer.org/root for details

So, whats your question?

@zachleigh what kind of user i have to create to run the composer

@madala any user other than "root"

You can allow composer to run as root by copy and paste this line into your terminal:

export COMPOSER_ALLOW_SUPERUSER=1

Becasue running composer as root is not advisable, try to use this option with caution