Run cp .env.example .env file to copy example file to .env
Then edit your .env file with DB credentials and other settings.
Run composer install command
Run php artisan migrate --seed command.
Notice: seed is important, because it will create the first admin user for you.
Run php artisan key:generate command.
Run php artisan storage:link command.
And that's it, go to your domain and login:
Username: [email protected]
Password: password