docker: unrecognized service when installing CUDA

WSL2 Ubuntu 20.04.3 LTSkernel image: 5.10.60.1-microsoft-standard-WSL2

I am trying to install CUDA according to the instructions here: https://ubuntu.com/blog/getting-started-with-cuda-on-ubuntu-on-wsl-2

And I am getting a docker: unrecognized service message when running command sudo service docker stop. I did follow the instructions up to the point where this command is in the tutorial, and the results of running sudo apt update && sudo apt install -y nvidia-docker2 seem successful. I've also tried to check if the docker service is available at all using service --status-all and didn't see it in the results.

Please help me figure out how to properly install CUDA, I am trying to set up opencv with GPU support for a project I am working on in image processing.

Here are the outputs from the mentioned commands I ran:

 service --status-all

Output:

 [ - ]  apparmor [ ? ]  apport [ - ]  atd [ - ]  console-setup.sh [ - ]  cron [ ? ]  cryptdisks [ ? ]  cryptdisks-early [ - ]  dbus [ ? ]  hwclock.sh [ + ]  irqbalance [ - ]  iscsid [ - ]  keyboard-setup.sh [ ? ]  kmod [ - ]  lvm2 [ - ]  lvm2-lvmpolld [ - ]  multipath-tools [ + ]  open-iscsi [ - ]  open-vm-tools [ ? ]  plymouth [ ? ]  plymouth-log [ - ]  procps [ - ]  rsync [ - ]  rsyslog [ - ]  screen-cleanup [ - ]  ssh [ ? ]  ubuntu-fan [ + ]  udev [ - ]  ufw [ - ]  unattended-upgrades [ - ]  uuidd [ - ]  x11-common

Command:

sudo apt update && sudo apt install -y nvidia-docker2

Output:

Hit:1 http://archive.ubuntu.com/ubuntu focal InReleaseHit:2 http://archive.ubuntu.com/ubuntu focal-updates InReleaseHit:3 https://nvidia.github.io/libnvidia-container/experimental/ubuntu18.04/amd64  InReleaseHit:4 http://archive.ubuntu.com/ubuntu focal-backports InReleaseHit:5 https://nvidia.github.io/libnvidia-container/stable/ubuntu18.04/amd64  InReleaseHit:6 http://security.ubuntu.com/ubuntu focal-security InReleaseHit:7 https://nvidia.github.io/nvidia-container-runtime/stable/ubuntu18.04/amd64  InReleaseHit:8 https://nvidia.github.io/nvidia-docker/ubuntu18.04/amd64  InReleaseReading package lists... DoneBuilding dependency treeReading state information... DoneAll packages are up to date.Reading package lists... DoneBuilding dependency treeReading state information... Donenvidia-docker2 is already the newest version (2.8.0-1).0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.