title: Laravel 5.7 - How to set all variables inside .env to point to test environment when the system is started?
body: <p>I have 2 buckets prod and dev.
  Inside .env I have S3_PROD and S3_DEV.
  I want my system to point to S3_DEV when I am in my dev environment.</p>
  
  <p>Taking consideration that I could have 10 variables to be pointed to a specific endpoint based on our environment what should be the best approach
  to set that?  </p>