A way to include certain docker data volumes in /var/lib/docker/volumes?

[panomitrius]

I saw that /var/lib/docker is excluded by default. I have certain data volumes that contains data I need to backup. Is there a way to include those? I run timeshift on a Ubuntu server so I don't have access to the GUI config tool, just the CLI. I've tried to add this to my timeshift.json

"include" : [ "/var/lib/docker/volumes/data-example1*", "/var/lib/docker/volumes/data-example2*", "/var/lib/docker/volumes/data-example3*" ],

But that doesn't solve it. Is there another way?