Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start
sudo usermod -a -G docker ec2-user

Make docker auto-start

sudo chkconfig docker on

Because you always need it....

sudo yum install -y git

Reboot to verify it all loads fine on its own.

sudo reboot

docker-compose install

Copy the appropriate docker-compose binary from GitHub:

sudo curl -L https://github.com/docker/compose/releases/download/1.22.0/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose

Fix permissions after download:

sudo chmod +x /usr/local/bin/docker-compose

Verify success:

docker-compose version