@QueenLinux Had a look at it and it seems, that this is a PHP version topic. I've created the PHAR with PHP 7.1 and you're using PHP 7.0. Can you create the phar by yourself by
git clone https://github.com/techdivision/import-cli-simple.git && cd import-cli-simple && composer update && vendor/bin/robo create:phar
Should work and should solve the problems.
php bin/import-cli-simple.phar import:categories or any other command returns In ConnectionFactory.php line 52:
SQLSTATE[HY000]  php_network_getaddresses: getaddrinfo failed: Name or service
In ConnectionFactory.php line 52:
PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service no