Next cloud is very heavy for just this but the book marks plugin and floccus browser plugins do what I needed for pocket. I used it as a shared bookmark service and didn’t really leverage the offline content.

I haven’t looked into it but I’ve heard it’s pretty good docker, or otherwise. Self hosting is not quite at the masses yet but this sounds like one of the easier ones

It’s a decent argument to host your own instance just for your self and not having to shuffle subscriptions around