CI4 clone folder inside Vendor!?

Must be a related question...

when I copy the app to the production server, I do not want to copy all the development dependencies in "vendor", so I only copy codeigniter, benedmunds and composer. However, if I do not include other stuff in "vendor", I get fatal error about missing phpunit. If I upload only the phpunit, I get fatal error about missing symphony:

Code:

Fatal error: require(): Failed opening required '/home/me/domains/mysite.lt/myproject/vendor/composer/../symfony/polyfill-ctype/bootstrap.php' (include_path='.:/usr/share/pear') in '/home/me/domains/mysite.lt/myproject/vendor/composer/autoload_real.php on line 71

How do I tell the system that I do not want all those dependencies I do not use in the production?

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Donatas G.