don't run db-load if db-dump is not the most recent file in the sql dir

nextcloud/assets/db-updown.service

@@ -7,7 +7,7 @@ Requires=postgresql.service
 Type=oneshot
 RemainAfterExit=yes
 EnvironmentFile=/etc/environment
-ExecStart=/bin/bash -c "db-load /vol/data/sql/$DBNAME-updown.sql"
+ExecStart=/bin/bash -c "if [[ $(ls -t /vol/data/sql/ | head -1) == $DBNAME-updown.sql ]]; then db-load /vol/data/sql/$DBNAME-updown.sql; fi"
 ExecStop=/bin/bash -c "db-dump /vol/data/sql/$DBNAME-updown.sql"
 
 [Install]