Docker-engine conflicts with 2:docker-1.12.6-68.gitec8512b.el7.centos.x86_64 solution

When you install Kubernetes on the server, there is a problem when you perform the following command installation:
Yum install-y Etcd kubernetes
Error: Docker-engine conflicts with 2:docker-1.12.6-68.gitec8512b.el7.centos.x86_64
The detailed error description is as follows:

Workaround: Because Docker is installed automatically when the kubernetes is installed, performing this step can cause conflicts if there is already a Docker installed on the machine. If the Docker version already installed is inconsistent with the Docker version of Kubernetes, the error will inevitably result.        So it is advisable to install the kubernetes on the machine without installing Docker, or uninstall the original Docker. Note that the screenshot above suggests that you can use the "--skip-broken" command to avoid this error, but after I observed that there is no egg to use ...