fix: redis requires schema for uri with bench set command

Author: taz77

docker/init.sh

@@ -14,9 +14,9 @@ cd frappe-bench
 
 # Use containers instead of localhost
 bench set-mariadb-host mariadb
-bench set-redis-cache-host redis:6379
-bench set-redis-queue-host redis:6379
-bench set-redis-socketio-host redis:6379
+bench set-redis-cache-host redis://redis:6379
+bench set-redis-queue-host redis://redis:6379
+bench set-redis-socketio-host redis://redis:6379
 
 # Remove redis, watch from Procfile
 sed -i '/redis/d' ./Procfile