added a task scheduler for recurring tasks

docker-compose.env.example

@@ -1,7 +1,3 @@
-# Database settings for paperless
-# If you want to use sqlite instead, remove this setting.
-PAPERLESS_DBHOST="db"
-
 # The UID and GID of the user used to run paperless in the container. Set this
 # to your UID and GID on the host so that you have write access to the
 # consumption directory.