Working LEMP stack -Debian Linux 8.5 -Nginx 1.6.2 -MySQL 5.5.53 -PHP 7

Installation: Create Dataset and give read/execute permissions to the user www. Use this dataset in the advanced creation section under volumes and map to /var/www/html Create index.php in this your mapped folder with this content:

      <?php
          $link = mysqli_connect("127.0.0.1", "admin", "pass");

          if (!$link) {
          echo "Error: Unable to connect to MySQL." . PHP_EOL;
          echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
          echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
          exit;
          }

          echo "Success: A proper connection to MySQL was made!" . PHP_EOL;
          echo "Host information: " . mysqli_get_host_info($link) . PHP_EOL;

          mysqli_close($link);
      ?>

       <?php phpinfo();?>

Connect to your webserver and check if your index.php file can be accessed.

In case you'd like to change the mysql username and password: Start the Serial Console

   # mysql
   #  mysql> SET PASSWORD FOR 'admin'@'%' = PASSWORD( 'password' );