magento2 – delete the folder & pub; for command line URLs

For added security, we have configured DocumentRoot so that our Magento application is in the pub/ Magento installation directory, as described in the official documentation.

However, there is now a problem when running commands on the command line – or when the own Magento cron is running: whenever a URL is generated for the front-end context, for example . via

$ this-> appEmulation-> startEnvironmentEmulation (
$ store-> getId (),  Magento  Framework  App  Area :: AREA_FRONTEND, true
)

// ...

$ this-> appEmulation-> stopEnvironmentEmulation ();

any generated front-end URL – like for product images, will always contain the pub/ part of the URL.

the pub / index.php replaces folder paths like this:

$ params = $ _SERVER;
$ params[Bootstrap::INIT_PARAM_FILESYSTEM_DIR_PATHS] = [
    DirectoryList::PUB => [DirectoryList::URL_PATH => ''],
DirectoryList :: MEDIA => [DirectoryList::URL_PATH => 'media'],
DirectoryList :: STATIC_VIEW => [DirectoryList::URL_PATH => 'static'],
DirectoryList :: UPLOAD => [DirectoryList::URL_PATH => 'media/upload'],
];
$ bootstrap =  Magento  Framework  App  Bootstrap :: create (BP, $ params);
/ ** @var  Magento  Framework  App  Http $ app * /
$ app = $ bootstrap-> createApplication ( Magento  Framework  App  Http :: class);
$ bootstrap-> run ($ app);

that is, it just removes the pub/ part of all these folder paths.

However, how do you do the same for the command line environment? (But only for the frontal context.)

Magento version: 2.2.6