moby: cloudstor.sock: connect: no such file or directory

Description Trying to install the azure cloudstor plugin on a docker installation on-premise (not on Docker for Azure). The only documentation I could find seems to concern Docker for Azure. Is this plugin even compatible for on-premise setups?

Error response from daemon: dial unix /run/docker/plugins/b3d498c8c4714dfc271f72e32656e81224f8c00151f404f459db512e4ac62bb0/cloudstor.sock: connect: no such file or directory

Steps to reproduce the issue:

sudo docker swarm init

sudo docker plugin install --alias cloudstor:azure \
--grant-all-permissions docker4x/cloudstor:18.09.2-ce-azure1 \
CLOUD_PLATFORM=AZURE \
AZURE_STORAGE_ACCOUNT_KEY="$AZURE_STORAGE_ACCOUNT_KEY" \
AZURE_STORAGE_ACCOUNT="$AZURE_STORAGE_ACCOUNT" \
DEBUG=1

Describe the results you received:

Error response from daemon: dial unix /run/docker/plugins/641a1b5d1ff1ff38ce54d7b1f785d357f37c8ec2f4f0a6f15ec221cdfb399c10/cloudstor.sock: connect: no such file or directory

ID                  NAME                DESCRIPTION                       ENABLED
b3d498c8c471        cloudstor:azure     cloud storage plugin for Docker   false

Describe the results you expected:

ID                  NAME                DESCRIPTION                       ENABLED
b3d498c8c471        cloudstor:azure     cloud storage plugin for Docker   true

Additional information you deem important (e.g. issue happens only occasionally):

Output of docker version:

Client: Docker Engine - Community
 Version:           18.09.2
 API version:       1.39
 Go version:        go1.10.8
 Git commit:        6247962
 Built:             Sun Feb 10 04:12:39 2019
 OS/Arch:           darwin/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.2
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.6
  Git commit:       6247962
  Built:            Sun Feb 10 04:13:06 2019
  OS/Arch:          linux/amd64
  Experimental:     false

Output of docker info:

Containers: 22
 Running: 0
 Paused: 0
 Stopped: 22
Images: 17
Server Version: 18.09.2
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: active
 NodeID: 66etpkyj3g3sr0tj60xyaz8dc
 Is Manager: true
 ClusterID: o9oejgvora8oyp5cnx6ol2i2l
 Managers: 1
 Nodes: 1
 Default Address Pool: 10.0.0.0/8
 SubnetSize: 24
 Orchestration:
  Task History Retention Limit: 5
 Raft:
  Snapshot Interval: 10000
  Number of Old Snapshots to Retain: 0
  Heartbeat Tick: 1
  Election Tick: 10
 Dispatcher:
  Heartbeat Period: 5 seconds
 CA Configuration:
  Expiry Duration: 3 months
  Force Rotate: 0
 Autolock Managers: false
 Root Rotation In Progress: false
 Node Address: 192.168.65.3
 Manager Addresses:
  192.168.65.3:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9754871865f7fe2f4e74d43e2fc7ccd237edcbce
runc version: 09c8266bf2fcf9519a651b04ae54c967b9ab86ec
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.9.125-linuxkit
Operating System: Docker for Mac
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.952GiB
Name: linuxkit-025000000001
ID: SSTC:7UCL:LONP:JPNF:C5HC:EWYG:ADSY:LAT7:JXLG:ZYK4:T5FG:UZ6N
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 38
 Goroutines: 163
 System Time: 2019-03-08T15:13:18.331799928Z
 EventsListeners: 2
HTTP Proxy: gateway.docker.internal:3128
HTTPS Proxy: gateway.docker.internal:3129
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

Additional environment details (AWS, VirtualBox, physical, etc.): This was tested on a mac and linux laptops and on our dev swarm server running on Red Hat Enterprise Linux Server release 7.3 on VMWare.