How to change app path on the fly from a custom task?

Question

I'm creating a project that consists on calling 'bake project' (using DispatchShell) from inside a task. The problem is, after I bake it, how do I get the app path to change from the current path to the newly baked one so I can automatically run other tasks inside it? The code is the following:

public function execute(){
    // ...

    $this->dispatchShell(/* Bake project script */);

    /* Where I want to change app path */

    $this->dispatchShell(/* creating a schema */);

}

I have tried running $this->dispatchShell('-app appPath'); but it doesn't work.