Install bundle into symfony project
composer require vldmrk/phpbu-symfony-bundle
Add Bundle
Vldmrk\PhpbuBundle\PhpbuBundle::class => ['all' => true],
Place configuration file phpbu.xml into the root of project '%kernel.project_dir%/phpbu.xml'
Run backup scenario
php bin/console phpbu:backup
You can rewrite default location of configuration file for phpbu,
just change parameter phpbu.configuration.
After that, check new configuration path php bin/console debug:container --parameter=phpbu.configuration