DB01_BACKUP_BLACKOUT parameters ain't working as expected

[rltas]

Summary

With a blackout period of 1800 to 0800, backups are still running hourly with the default backup begin time of 2am.

Steps to reproduce

compose.yaml:

...
services:
  db-backup:
    image: tiredofit/db-backup:4.1.4
    environment:
      DEFAULT_BACKUP_BEGIN: "0200"
      DB01_BACKUP_INTERVAL: ${DB_BACKUP_INTERVAL:-1440}
      DB01_BACKUP_BLACKOUT_BEGIN: ${DB_BACKUP_BLACKOUT_BEGIN}
      DB01_BACKUP_BLACKOUT_END: ${DB_BACKUP_BLACKOUT_END}
...

.env:

DB_BACKUP_INTERVAL=60
DB_BACKUP_BLACKOUT_BEGIN=1800
DB_BACKUP_BLACKOUT_END=0800

Resulting in this actual container environment:

DB01_BACKUP_BLACKOUT_BEGIN=1800
DB01_BACKUP_BLACKOUT_END=0800
DB01_BACKUP_INTERVAL=60
DEFAULT_BACKUP_BEGIN=0200

What is the expected correct behavior?

Backups aren't running between 1800 and 0800.

Possible fixes

docker-db-backup/install/assets/dbbackup/template-dbbackup/run

Line 73 in 4fc54e2

if [ -n "${backup_job_blackout_start}" ] && [ -n "${backup_job_blackout_finish}" ] ; then

docker-db-backup/install/assets/functions/10-db-backup

Line 204 in 4fc54e2

transform_backup_instance_variable "${backup_instance_number}" BLACKOUT_BEGIN backup_job_snapshot_blackout_start

Shouldn't these match?