split images, pull more env vars out

config/pathfinder/config.ini

@@ -53,7 +53,7 @@ SEED            =   {{ md5(@SERVER.SERVER_NAME) }}
 ;             - Cache data is stored on disc
 ;           redis=[SERVER]
 ;             - Cache data is stored in Redis. redis=[host]:[port]:[db]:[auth] (e.g. redis=localhost:6379:1:myPass)
-CACHE           =   redis=${CONTAINER_NAME}-redis:6379
+CACHE           =   redis=${REDIS_HOST}:${REDIS_PORT}
 
 ; Cache backend for API data
 ;           This sets the cache backend for API response data and other temp data relates to API requests.