Laravel Sail Project - Change working directory of a controller (php file) or integrate php project with laravel's sail project

Question

I am working on a project with Laravel. I have created it with sail. I am trying to use the api from a different tool, so following it's instructions it guides me to download from swagger editor a generated client.So independently, I have a php project (php-client from swagger editor) which I can interact with the tool. I am trying to include the files of this project inside my laravel's sail project, but because the use of containers and etc. the working directory of php laravel script is totally different. I don't know how to approach the solution. I can understand that the laravel sail project use a totally "different machine" because of sail. But how can I integrate this project to my laravel sail project or how can I serve this project with same working directory, just to make an include.