Install specific docker version on debian/ubuntu/mint.

by Benjamin H. (bman) Graham

I have ran into a need for a specific version of Docker on occasion (looking at you Rancher and Kubernetes) and the debian repos contain a non-supported version for Rancher to use in particular.

First, lets uninstall the existing versions you may have. 

sudo apt-get purge docker-engine

And then, this will install version 1.12 (replace version in URL as needed) of Docker. 

curl -s https://releases.rancher.com/install-docker/1.12.sh|sh

This will hold it from updates (apt pinning) 

sudo apt-mark hold docker-engine

There you go, simple and easy.