Why install docker on ubuntu should be `sudo apt-get install docker.io`?

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(Closed). This question is opinion-based. It is not currently accepting answers. question from:https://stackoverflow.com/questions/27978324/why-install-docker-on-ubuntu-should-be-sudo-apt-get-install-docker-io

Answer 1

http://blog.docker.com/2014/04/docker-in-ubuntu-ubuntu-in-docker/

Why do Ubuntu use docker-engine as executable name instead of just docker? Tutorials, blog posts all now have to mention this difference, “if you use Ubuntu 14.04, or if you are with rest of the world (including earlier versions of Ubuntu)”. Why?

This is because of a Debian/Ubuntu policy; there is already a program called “docker” [1], and it was not allowed to use the same binary name.

Full installation instructions for the most-recent version are at https://docs.docker.com/engine/installation/linux/ubuntulinux/.