Change from command line option to env var

[CathalOConnorRH]

Motivation

Update variable from command line options to env vars

What

Update variable from command line options to env vars

Why

Mix of variable feels wrong

How

Add an short answer for: How it was done? (E.g By removing this feature from ... OR By removing just the button but not its implementation ... )

Verification Steps

Add the steps required to check this change. Following an example.

1. Go to XX >> YY >> SS
2. Create a new item N with the info X
3. Try to edit this item
4. Check if in the left menu the feature X is not so long present.

Checklist:

• [ ] Code has been tested locally by PR requester
• [ ] Changes have been successfully verified by another team member

Progress

• [x] Finished task
• [ ] TODO

Additional Notes

PS.: Add images and/or .gifs to illustrate what was changed if this pull request modifies the appearance/output of something presented to the users.