Suggesting a different approach

[axelhzf]

I was reading the whole conversation here facebook/create-react-app#982
and I wanted to propose a different solution but the issue was closed. So I thought that this would be a good place to follow the conversation (sorry if that is not the case).

I tried a different approach here https://github.com/axelhzf/create-react-app-docker-environment-variables
the main idea is to build the application at build time and only replace the environment variables at runtime. The environment variables are replaced on the index.html defining a global variable.