Not able to load environment specific config in NestJS - nestjs

Question

I have created three env files : .env ,.env.test,.env.prod in my root directory.
.env file has
PORT=4000
DATABASE_URL="postgresql://postgres:1234#localhost:5432/postgres?schema=public"
JWT_SECRET="THIS_IS_A_SECRET_KEY_DEV_ENVIRONMENT"
JWT_EXPIRATION_TIME=3600
And my .env.test has
PORT=4001
DATABASE_URL="postgresql://postgres:1234#localhost:5432/postgres?schema=public"
JWT_SECRET="THIS_IS_A_SECRET_KEY_TEST_ENVIRONMENT"
JWT_EXPIRATION_TIME=2400
My app.moudle.ts looks like
const ENV = process.env.NODE_ENV;
console.log(ENV);
#Module({
imports: [
ConfigModule.forRoot({
envFilePath: !ENV ? '.env' : `.env.${ENV}`,
load: [configuration],
ignoreEnvFile: true,
}),
providers: [AppService],
controllers: [AppController],
})
export class AppModule {
constructor(private connection: Connection) {}
}
configuration.ts :
export default () => ({
port: parseInt(process.env.PORT, 10) || 3000,
jwt:{
secret:process.env.JWT_SECRET,
expiresIn:process.env.JWT_EXPIRATION_TIME
}
});
And my scripts are :
"start:dev": "nest build && nest start --watch",
"start:test": "NODE_ENV=test nest start --watch",
Controller code :
Logger.log(this.configService.get<string>('jwt.secret'));
When i inject conifgService in any controller and try log the jwt key it always fetches the key from .env file.Even when i run the app using script "start:test"
It always gets the value from .env file irrespective of script/environment
Logs this for all the scripts "THIS_IS_A_SECRET_KEY_DEV_ENVIRONMENT"