PHP-Apache Folder / DocumentRoot problem

Hello,

we have a selfmade small crm which is running on a hosting-provider. For better and faster testing and devlopment, I tried to setup a php-apache server with same conditions as the live-server has. This worked with one exception:

version: "'2'"
services:
    ApachePHP839:
        image: php:8.3.9-apache
        container_name: ApachePHP_8.3.10
        build: 
            context: .
            dockerfile: Dockerfile
        volumes:
            - /sharedFolderName/ProjectName/VersionName/public:/var/www/html
        ports:
            - 8945:80
        environment:
            USER_UID: 1026
            USER_GID: 100
        networks:
            - mariadb_net

networks:
  mariadb_net:
    name: mariadb_mariadb_net
    external: true 

CRM Website folder Structure:

ProjectName
	Uploads
	VersionName
		libs
		configs
		public //EntryPoint "DocumentRoot"
		etc..

On our webhosting-server, I can create the same Structure and tell the ConrolPanel what domain points to the DocumentRoot directory ( .../ProjectName/VersionName/public ) and I still have access to the folders before public.

Because of linking folder VersionName/public to www/html I dont have access to the folders in ProjectName/VersionName or ProjectName/Uploads. I understand that the  folders before public not exists for the image because www is the root folder of /public because of linking. But i dont understand how to change this. Not even sure what keywords I'm looking for.

Goal is:

Pointing DocumentRoot to /public but be able to access the folders before /public.

I tried to link /ProjectName/VersionName to /var/www

This works somehow. But I'm looking for the right way to do it. Maybe someone can give a hint what keywords to search or have a idea/solution for making this work.

Thanks a lot