self-hosting/roles/docker/defaults/main.yml

docker_apt_key: https://download.docker.com/linux/ubuntu/gpg
docker_apt_repository: https://download.docker.com/linux/ubuntu
# Choose 'edge' 'stable' or 'testing' for docker channel
docker_apt_channel: stable
# Docker daemon config file
docker_daemon_config: /etc/docker/daemon.json
docker_version: 18.06.*
Install docker 18.06 2018-09-20 00:35:06 +02:00			`docker_apt_key: https://download.docker.com/linux/ubuntu/gpg`
			`docker_apt_repository: https://download.docker.com/linux/ubuntu`
			`# Choose 'edge' 'stable' or 'testing' for docker channel`
			`docker_apt_channel: stable`
			`# Docker daemon config file`
			`docker_daemon_config: /etc/docker/daemon.json`
Use packer to create a base preconfigured base image 2018-10-18 22:45:01 +02:00			`docker_version: 18.06.*`