packer-docker-hello-world.json

gistfile1.txt

{
    "variables": {
        "source_image": "",
        "image_name":   "",
        "flavor":       ""
    },
    "builders": [{
        "type":         "openstack",
        "ssh_username": "centos",
        "source_image": "{{user `source_image`}}",
        "image_name":   "{{user `image_name`}}",
        "flavor":       "{{user `flavor`}}"
    }],
    "provisioners": [{
        "type":         "shell",
        "inline": [     "# os configuration",
                        "sudo ln -sf /usr/share/zoneinfo/Etc/UTC /etc/localtime",
                        "sudo sh -c 'echo vm.swappiness=0 > /etc/sysctl.d/disable-swap.conf'",
                        "# enable fasttrack yum repo",
                        "sudo yum upgrade -y centos-release",
                        "sudo sed -i 's/enabled=0/enable=1/g' /etc/yum.repos.d/CentOS-fasttrack.repo",
                        "# upgrade all packages",
                        "sudo yum upgrade -y",
                        "# install and configure docker",
                        "sudo yum install -y http://cbs.centos.org/kojifiles/packages/docker/1.4.1/2.el7/x86_64/docker-1.4.1-2.el7.x86_64.rpm",
                        "sudo systemctl enable docker",
                        "sudo systemctl start docker",
                        "# install and configure docker-hello-world container",
                        "sudo docker run -d -p 80:80 --restart=always keithchambers/docker-hello-world:latest",
                        "# cleanup image",
                        "sudo rm -rf /tmp/*",
                        "sudo find /var/log -type f -delete",
                        "history -c",
                        "sudo poweroff"]
    }]
}