What's the difference when installing docker w

Question

When it comes to install Docker on centos, i found 2 different ways to do it.

The first one is : yum install docker-engine

The second one is: yum install docker-io

And in case i installed docker using the first one, it i continue with the second one the error appeared, like this:

Error: docker-engine conflicts with docker-1.8.2-10.el7.centos.x86_64
Error: docker-engine-selinux conflicts with docker-selinux-1.8.2-10.el7.centos.x86_64

So anyone can tell me what's the difference between them?

Answer 1

This dates back from June 2015, when Docker announced "New Apt and Yum Repos"

That is when new packages (like the one for CentOS) were named docker-engine (initially to replace lxc-docker*)