`start: dotenvx run -f .env.local -f .env -- node index.js`
Instead of the -f flag, which now cannot be overriden, one could invoke it with
`DOTENV=.env.staging npm run start`
For example
DOTENV_PRIVATE_KEY_PRODUCTION
Would provide it with the information it needs to read .env.production
`start: dotenvx run -f .env.local -f .env -- node index.js`
Instead of the -f flag, which now cannot be overriden, one could invoke it with
`DOTENV=.env.staging npm run start`