Docker Swarm Setup with docker desktop - buildx ls hangs with "context deadline exceeded"

Hello, I have a raspberry pi 4 (64 bit) and a windows10 computer with WSL2 backend, the main objective is to build multiplatform docker images with linux/arm64 and linux/amd64.

Setup

Docker installation

• Both pi and windows 10 are running docker 20.10.7 with the docker desktop version 3.5.2 running on Win10
• I've installed buildx as per the instructions in the readme on the pi.

Firewall updates

• I've updated the win10 firewall to open ports 2375-2377, 4789, 7946 on both incoming and outgoing connections for TCP and 4789, 7946 for incoming and outgoing connections for UDP.
• On the raspberry pi I've made edits to daemon.json and override.conf as suggested here
• I am unsure what needs to be edited (if any) need to be made on the Win10 Desktop.

Setting up the swarm

On the raspberry Pi I then ran docker swarm init and copied the token and ran docker swarm join on the Win10 Desktop.

Both commands finished successfully.

Running

pi $ docker node ls
ID                            HOSTNAME         STATUS    AVAILABILITY   MANAGER STATUS   ENGINE VERSION
u8gar3ofjb8qvgt6as8sgnv4b     docker-desktop   Ready     Active                          20.10.7
kh4azzq57ggwfhympe2l82d61 *   raspberrypi      Ready     Active         Leader           20.10.7

We see that the swarm connection completed successfully.

Noticing that docker-desktop isn't an appropriate hostname, I update /etc/hosts to point 'docker-desktop` to the local ip address of the windows computer.

To test this is successful

pi $ ping docker-desktop
PING docker-desktop (192.168.0.17) 56(84) bytes of data.
64 bytes from docker-desktop (192.168.0.17): icmp_seq=1 ttl=128 time=1.24 ms

I then initiate my buildx instance:

pi $ docker buildx create --use --name multibuild raspberrypi
multibuild

pi $ docker buildx ls
NAME/NODE     DRIVER/ENDPOINT        STATUS   PLATFORMS
multibuild *  docker-container
  multibuild0 tcp://raspberrypi:2375 inactive
default       docker
  default     default                running  linux/arm64, linux/arm/v7, linux/arm/v6

I then try to add the 'docker-desktop' node to my multibuild for linux/amd64 platforms.

pi $ docker buildx create --append --name multibuild docker-desktop
multibuild

But now docker buildx ls hangs, upon cancelling I get the following:

pi $ docker buildx ls
NAME/NODE     DRIVER/ENDPOINT           STATUS PLATFORMS
multibuild *  docker-container
  multibuild0 tcp://raspberrypi:2375    Get "http://raspberrypi:2375/v1.41/containers/buildx_buildkit_multibuild0/json": context deadline exceeded
  multibuild1 tcp://docker-desktop:2375 Get "http://docker-desktop:2375/v1.24/containers/buildx_buildkit_multibuild1/json": context deadline exceeded
default       docker
  default     default                   running linux/arm64, linux/arm/v7, linux/arm/v6

I would appreciate any help to fix this

No repository file or test is named. Start by reproducing the docker buildx create --append and docker buildx ls sequence with the Raspberry Pi and Docker Desktop endpoints, then inspect the daemon and Buildx connectivity configuration described in daemon.json and override.conf. Done means establishing the cause of the timeout and documenting a verified configuration or limitation.