customize-cra DefinePlugin config
usage
// config-overrides.js
import { overridePassedProcessEnv } from "cra-define-override";
module.exports = override(
overridePassedProcessEnv(["BASE_URL", "OTHER_ENV_NAME"])
);then on your code
// src/config.js
export default {
baseUrl: process.env.BASE_URL || "https://default.fox.mn"
};