Allow Zero-Downtime Backups
https://github.com/AzuraCast/AzuraCast/issues/1019
"I'd like to be able to run automatic backups every night without having any downtime of AzuraCast.
Don't stop all docker containers when doing a backup.
If it's not possible to do the backup like it is implemented now without stopping all containers we should write a more sophisticated backup script. This could be a bigger task then."