Using Environment variables
The modern approach of using containers makes heavy use of environment variables for injecting values into applications. This approach is very convenient because it makes your application agnostic to the environment in which it will be deployed. This process implies that some part of the configuration is pulled from outside the application code.
Moving all the configuration outside the application makes developers unaware of everything going on internally, and this creates misunderstandings between the developer and operations teams when problems occur. You have your local code and you can see it working, but you will have no idea what can happen in the production environment when other settings will be applied. Often, those who manage the operations don't know much about the meaning behind configurations because they are not experts on the applications and usually are not developers. Developers know how the application works and are aware of the...
