Update docker-compose.yml

- $BACKUP_TIME added
- timed backup as command

docker-compose.yml

@@ -4,16 +4,17 @@ version: '3'
 services:
 
   zammad-backup:
-    command: ["zammad-backup"]
+    command: ["zammad-timed-backup"]
     depends_on:
       - zammad-railsserver
       - zammad-postgresql
     entrypoint: /usr/local/bin/backup.sh
     environment:
-      - BACKUP_SLEEP=86400
+      - BACKUP_TIME=03:00
       - HOLD_DAYS=10
       - POSTGRESQL_USER=${POSTGRES_USER}
       - POSTGRESQL_PASSWORD=${POSTGRES_PASS}
+      - TZ=Europe/Berlin
     image: postgres:${POSTGRES_VERSION}
     restart: ${RESTART}
     volumes: