Best practice for backup docker containers.

I have a TS-564 NAS with QTS 5.2.6 up to date firmware. What is the best practice backup all container with theirs volumes? I have tried to set HBS3 backup to an external TR-002 storage but after it finished I got a warning message that informed me about that not all of files include my backup. I choosed Container folder for set backup job.

I setup my containers via compose and have the volumes on a user accessible area, this makes it easy to backup the container files and easy to update the containers, just destroy and recreate the containers with the same yaml.

There is also tools like watchtower, that can handle updating for you

It means that you set the volume of container to a shared folder?

Yes make a shared folder just for docker and setup every docker to run from there no the built in container folder from qnap. Makes restore complete and fast.

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It a good idea but I would be more happier can make backup with original container folder.