digital ocean installing docker

do-install-docker.sh

# instructions from https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-16-04

# Add  the GPG key for the official Docker repository to the system
sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

# Add the Docker repository to APT sources:
sudo apt-add-repository 'deb https://apt.dockerproject.org/repo ubuntu-xenial main'

# Update the package database with the Docker packages from the newly added repo:
sudo apt-get update

# Make sure you are about to install from the Docker repo instead of the default Ubuntu 16.04 repo:
apt-cache policy docker-engine

# install from proper repo
sudo apt-get install -y docker-engine

# check its running
sudo systemctl status docker

#update running perms
sudo usermod -aG docker $(whoami)