Add envs for Redis username and password to address #126

[Casuallynoted]

Description

Adds env variables for defining a redis user and password, useful for some containerized setups.

Fixes #126

Type of change

• [x ] New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Checklist

• [x ] My code follows the style guidelines of this project
• [ x] My commits follow the commit standards of this project
• [ x] I have performed a self-review of my own code
• [ x] I have commented my code, particularly in hard-to-understand areas
• [ x] I have made corresponding changes to the documentation
• [x ] My changes generate no new warnings
• [x ] I have checked my code and corrected any misspellings