Question: virtualbox vt-x is not available docker?
Answer: If you are trying to run Virtualbox on Windows, and received the error 'VT-x is not available (VERR_VMX_NO_VMX)'. ... The new version of docker-machine requires Hyper-V ( it used to be Virtualbox). With Hyper-V feature enabled, the VirtualBox is unable to work properly. So disabling Hyper-V is the fix for this issue.