Fix cache location

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>

docker-compose.yml

@@ -32,6 +32,7 @@ services:
     environment:
       PYTHONDONTWRITEBYTECODE: '1'
       DATABASE_URL: 'mysql://satnogsdb:satnogsdb@db/satnogsdb'
+      CACHE_LOCATION: 'redis://redis:6379/0'
     command: ["djangoctl.sh", "develop", "/usr/local/src/satnogs-db"]
     volumes:
       - '.:/usr/local/src/satnogs-db'