Install Docker CE on Ubuntu

install-docker-ce.sh

#!/bin/bash

# Check what version of Ubuntu we have installed

source /etc/lsb-release

# Environment variables made available
# DISTRIB_ID=Ubuntu
# DISTRIB_RELEASE=14.04
# DISTRIB_CODENAME=trusty
# DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS"

MAJ_RELEASE=`echo ${DISTRIB_RELEASE}|cut -d'.' -f1`

if [ ${MAJ_RELEASE} -lt 14 ]; then
  echo "Unfortunately at least Ubuntu 14.04 is required"
  exit 1
fi

# Remove previous versions
apt-get remove -y docker docker-engine docker.io

# Install dependencies
## If Ubuntu 14.04 we want to add support for AUFS
if [ "${MAJ_RELEASE}" -eq 14 ]; then
  apt-get update
  apt-get install -y linux-image-extra-$(uname -r) linux-image-extra-virtual
fi

## Setup Docker CE repository
apt-get update
apt-get install -y apt-transport-https \
ca-certificates \
curl \
software-properties-common

## Add official GPG key
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
apt-key fingerprint 0EBFCD88

add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"

# Install Docker CE
apt-get update
apt-get install -y docker-ce

# Verify installation via 'hello-world' container
docker run hello-world