fix: added alternative memcached env variable for dokku configuration

[Bob-six]

Summary by Sourcery

Bug Fixes:

• Use MEMCACHED_URL env var with fallback to MEMCACHEDCLOUD_SERVERS for Dokku deployments

[sourcery-ai]

Reviewer's Guide

Modified the MEMCACHED_URL setting to first check a new MEMCACHED_URL environment variable and fall back to MEMCACHEDCLOUD_SERVERS, ensuring compatibility with both Dokku and existing setups.

Class diagram for updated settings environment variable logic

classDiagram
    class settings {
        +DEBUG
        +DATABASE_URL
        +REDIS_URL
        +MEMCACHED_URL
        +MEMCACHED_USERNAME
        +MEMCACHED_PASSWORD
        +DEPLOYMENT_ENV
    }
    settings : MEMCACHED_URL = os.environ.get("MEMCACHED_URL") or os.environ.get("MEMCACHEDCLOUD_SERVERS")
    settings : MEMCACHED_USERNAME = os.environ.get("MEMCACHEDCLOUD_USERNAME")
    settings : MEMCACHED_PASSWORD = os.environ.get("MEMCACHEDCLOUD_PASSWORD")

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File-Level Changes

Change	Details	Files
Introduce fallback to a new MEMCACHED_URL env var for Memcached settings	Changed MEMCACHED_URL assignment to use os.environ.get("MEMCACHED_URL") or os.environ.get("MEMCACHEDCLOUD_SERVERS") Wrapped the fallback in a multi-line expression for readability Removed the previous direct assignment from MEMCACHEDCLOUD_SERVERS	brightIDfaucet/settings.py

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[sourcery-ai]

Hey @Bob-six - I've reviewed your changes and they look great!

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