Override.env 与内联 arguments

Question

Is it possible to override the variables inside.env on run or build?

Content of the.env file

REACT_APP_REGIONALIZED_BASE_API_URL=http://hello-default.net

Command script in package.json

"scripts": {
  "start:production": "env-cmd -f .env react-scripts start",
}

Sample start command executed in terminal or even in ci/cd pipeline where you have instances based on regions

REACT_APP_REGIONALIZED_BASE_API_URL=http://hello-eu.net yarn start:production

So, instead of having a build with api url http://hello-default.net , it should have http://hello-eu.net

Answer 1

Sharing the [alternative] solution I discovered. Just need to add --no-override argument. This will prevent replacing of the already set variable. Also applicable with multiple env files.

"scripts": {
  "start:production": "env-cmd --no-override -f .env react-scripts start",
}