How to add column with foreign key within migration?

I would like to add new column in database within migration, but I want to add also foreign key. 
I already have a table devices and I want to add column customer_id with relation to customers table.

Here is a migration

PHP Code:

<?php

declare(strict_types=1);

namespace Modules\Customers\Database\Migrations;

use CodeIgniter\Database\Migration;

class AlterDevices extends Migration
{
    public function up(): void
    {
        $fields = [
            'customer_id' => [
                'type'    => 'int',
                'unsigned' => true,
                'after'    => 'id',
            ],
        ];

        $this->forge->addColumn('devices', $fields);
        $this->forge->addForeignKey('customer_id', 'customers', 'id');
    }

    public function down(): void
    {
        $this->forge->dropColumn('devices', 'customer_id');
    }
} 


But when I ran php spark migrate -all I'm getting

Code:

Field `customer_id` not found.

and migration fail.