Rewrite environment variables and move to /pods/templates/

[muhsinking]

Explains environment variables in the context of Pods, including how and why to use them.

[justinwlin]

Is it potentially helpful to have a small blurb of env variable vs secrets? cause tbh im not sure what the key differentiator is? is is that secrets are audit trails? Im not sure.

Is it that it prevents leakage since it is hidden inside the account? is it that all pods automatically get secrets vs env need to be injected individually?

[justinwlin]

Something to note tho is that when you update an env variable it will update your pods / serverless endpoint! But it is a great way to modify running code without a full redeployment, and just a basic restart / reinitialization.

[justinwlin]

If your application is dependent on an ENV variable existing it can be important to add a check that it exists, and throw an error or return an error on what is missing.

Can happen a lot for handlers that are dependent on ex. a database env but forget to add it

[justinwlin]

lgtm, minor feedback in the comments