docker rootless on ubuntu - overlay2 failed: driver not supported

It seems i've managed to fix my own issue.

sudo groupadd dockersudo usermod -aG docker $USERsystemctl --user restart docker.service

these docs was quite useful -

https://docs.docker.com/install/linux/linux-postinstall/

docker infoClient: Debug Mode: falseServer: Containers: 2  Running: 0  Paused: 0  Stopped: 2 Images: 9 Server Version: 19.03.6 Storage Driver: overlay2  Backing Filesystem: extfs  Supports d_type: true  Native Overlay Diff: false Logging Driver: json-file Cgroup Driver: none Plugins:  Volume: local  Network: bridge host ipvlan macvlan null overlay  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: docker-init containerd version: 35bd7a5f69c13e1563af8a93431411cd9ecf5021 runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd init version: fec3683 Security Options:  seccomp   Profile: default  rootless Kernel Version: 5.3.0-40-generic Operating System: Ubuntu 19.10 OSType: linux Architecture: x86_64 CPUs: 24 Total Memory: 62.82GiB Name: fractal Docker Root Dir: /home/ice/.local/share/docker Debug Mode: false Registry: https://index.docker.io/v1/ Labels: Experimental: true Insecure Registries:  127.0.0.0/8 Live Restore Enabled: false Product License: Community Engine

docker versionClient: Docker Engine - Community Version:           19.03.6 API version:       1.40 Go version:        go1.12.16 Git commit:        369ce74a3c Built:             Thu Feb 13 01:24:49 2020 OS/Arch:           linux/amd64 Experimental:      falseServer: Docker Engine - Community Engine:  Version:          19.03.6  API version:      1.40 (minimum version 1.12)  Go version:       go1.12.16  Git commit:       369ce74a3c  Built:            Thu Feb 13 01:32:22 2020  OS/Arch:          linux/amd64  Experimental:     true containerd:  Version:          v1.2.12  GitCommit:        35bd7a5f69c13e1563af8a93431411cd9ecf5021 runc:  Version:          1.0.0-rc10  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd docker-init:  Version:          0.18.0  GitCommit:        fec3683