React build with env file from a command line - reactjs

Question

Is there any way to create React App build from a command like? So far I have in the shell script:
npm install;
npm run-script build:test;
where build:test is
bash -ac '. .env.test; react-scripts build'
but that will refer to build:test script from package.json but when I want to use specific .env file in the shell script (without editing or adding anything to package.json) as follow
npm run .env.my_box react-scripts build;
that will not execute build for .env.my_box
What I have set incorrectly?

Answer 1

you should try this library https://github.com/toddbluhm/env-cmd
Update your package.json
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject",
"build:stage": "env-cmd -f ./.env.stage npm run-script build"
}
then npm run build:stage

Answer 2

You could do something like this:
on package.json
"scripts": {
"server": "cd server && npm start",
"client": "cd client && npm start",
"server-dep": "cd server && npm install",
"client-dep": "cd client && npm install",
"install-dep": "npm install && concurrently \"npm run server-dep\" \"npm run client-dep\"",
"dev": "concurrently \"npm run server\" \"npm run client\"",
"test": "echo \"Error: no test specified\" && exit 1"
},
then npm run start for example, this is monorepo so we run server and frontend with one command