How to properly manage project configuration for different clients?

Question

git

There is a small project that should be configured differently for different clients. Developed almost alone - all by himself, all by himself. The project files are in the GIT repository, but ... where and how are the configuration files stored? How to organize the storage and assembly of such a project correctly, conveniently and without unnecessary confusion?

Answer 1

Store example configurations. The documentation describes the parameters, if necessary.
.env - configuration
.env.example - an example containing all parameters, default or recommended values ​​(except credentials), comments.