install docker
$ sudo yum update
$ sudo yum install -y docker
$ sudo usermod -aG docker ec2-user
$ sudo service docker start
install docker-compose
$ sudo su
$ curl -L "https://github.com/docker/compose/releases/download/1.8.0/docker-compose-$(uname -s)-$(uname -m)" > /usr/local/bin/docker-compose
$ chmod +x /usr/local/bin/docker-compose
$ exit
$ docker-compose --version
