Install Docker and Docker Compose

To install Docker-CE (Community Edition) and Docker Compose, you can open the terminal, or SSH into your host system, then use the command 

curl https://get.docker.com | sh

You'll be prompted to enter you super user password, then the install should commence.

NOTE: If you are using a system without sudo installed, you should install it, as this command seems to require it, even if you're logged in as root, which you really shouldn't be.

If you happen to be using a Linux version that isn't supported by this one-liner command, you can find instructions to install Docker-CE and Docker Compose for your distro with a quick web search.