install docker daemon code example

Example 1: docker install ubuntu

$ sudo apt-get update

$ sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

Example 2: install docker linux

sudo apt-get install -y linux-image-generic-lts-trusty linux-headers-generic-lts-trusty