Whether docker in aptitude will be configured to use zfs by default is impossible to guess. It is however possible to say that ZFS is already supported by docke

Whether docker in aptitude will be configured to use zfs by default is impossible to guess. It is however possible to say that ZFS is already supported by docker, e.g.: https://docs.docker.com/engine/userguide/storagedriver/zfs-driver/ https://docs.docker.com/engine/userguide/storagedriver/zfs-d...