Add changes var to docker driver import func.
Add changes var to docker driver import func.

bryson/packer,rnaveiras/packer,pecigonzalo/packer,dave2/packer,bryson/packer,mkuzmin/packer,timsutton/packer,ricardclau/packer,dave2/packer,mkuzmin/packer,mitchellh/packer,mitchellh/packer,mitchellh/packer,youhong316/packer,timsutton/packer,mkuzmin/packer,youhong316/packer,paulmey/packer,youhong316/packer,youhong316/packer,grubernaut/packer,paulmey/packer,paulmey/packer,paulmey/packer,mitchellh/packer,grubernaut/packer,mkuzmin/packer,grubernaut/packer,mkuzmin/packer,bryson/packer,pecigonzalo/packer,mkuzmin/packer,tas50/packer,ricardclau/packer,tas50/packer,ricardclau/packer,grubernaut/packer,timsutton/packer,hashicorp/packer,timsutton/packer,tas50/packer,rnaveiras/packer,bryson/packer,timsutton/packer,ricardclau/packer,dave2/packer,paulmey/packer,dave2/packer,mitchellh/packer,hashicorp/packer,dave2/packer,tas50/packer,bryson/packer,dave2/packer,grubernaut/packer,tas50/packer,pecigonzalo/packer,grubernaut/packer,rnaveiras/packer,bryson/packer,rnaveiras/packer,timsutton/packer,paulmey/packer,ricardclau/packer,hashicorp/packer,rnaveiras/packer,tas50/packer,hashicorp/packer,ricardclau/packer,rnaveiras/packer,pecigonzalo/packer,youhong316/packer,youhong316/packer