McDonald's menu for ex-presidents is quite exclusive

https://infosec.pub/post/11527891

McDonald's menu for ex-presidents is quite exclusive - Infosec.Pub

In other words, Eternity’s wrong thumbnail problem has returned with full force. Often, posts will show the thumbnail of a totally different post.

I recognize Linux, but what are the other two?
Docker and git I think.
Trans-oceanic container whale, and dot splitting cables.