Tag as `x.y.z` without `v` prefix
Tag as `x.y.z` without `v` prefix

Signed-off-by: Nicolas De Loof <27d8e526c390473e9c51da80626c6b0539b42f4f@gmail.com>

Close https://github.com/docker/compose/issues/7168
vdemeester/compose,thaJeztah/compose,vdemeester/compose,thaJeztah/compose