Your docker folder is in the system share. This share is set to be moved to the array, and the files now exist between the array (disk 1 and the cache pool). You really don't want this.
Not only (if mover fully succeeds in moving everything to the array) is there a huge performance hit in running docker from the array, but in terms of when only some files can be moved (which is to be expected since docker always has files open and mover can't move in use files) it's probably going to play havoc with weird things happening.
What I'd do.
Stop docker service in Settings, Docker
In advanced view, check off and delete the folder
From Shares, system settings set the Use Pool setting to move from the Array to the Cache Pool (ie: use cache: prefer)
From Main, Array Operations run Mover (Move Now)
Settings, Docker -> re-enable the service
Apps, Previous Apps -> check off what you want re-installed and hit the "install x apps"