Get rid of permament redis storage

With cache timeout set to 1h it just doesn't make any sense to bother
doing that.

Author: luk1337

fly.toml

@@ -26,10 +26,6 @@ kill_timeout = "5s"
     soft_limit = 200
     hard_limit = 450
 
-[[mounts]]
-  destination = "/data"
-  source = "redis"
-
 [metrics]
   port = 8080
   path = "/metrics"

redis/start-redis-server.sh

@@ -1,3 +1,3 @@
 sysctl vm.overcommit_memory=1
 sysctl net.core.somaxconn=1024
-redis-server --requirepass $CACHE_REDIS_PASSWORD --dir /data/
+redis-server --requirepass $CACHE_REDIS_PASSWORD --dir $(mktemp -d)