Hi all,
Looks like WD are looking into the issues with Docker seriously :
Docker : While Docker was not officially supported in My Cloud OS 3, we understand this is important for you. We are looking into a way to configure our Linux Kernel configuration so Docker can be manually added. This task may take some time, and we will let you know as soon as we have an update.
Full post @ Update on My Cloud OS 5 Feedback
Docker was originally supported on the OS3 platform and was the chosen way to deploy new applications until they made the current packaging platform available for OS3, but who is picking straws here. 
Cheers,
JediNite
