src folder cnfigurable

[st3phani]

@markshust can you create configurable name for src folder from .env file?

Thanks

[st3phani]

Why it helps to make the src folder configurable:
There is a possibility that the structure of the project in the repository will be different from just Magento.

[markshust]

Isn't the only place it is defined is in the docker-compose.dev.yml file? You can update it right there.