Core-os

• https://coreos.com/docs/running-coreos/platforms/libvirt/

docker cluster

• user-data

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- name: httpd.service
      command: start
      enable: true
      content: |
        [Unit]
        Description=httpd
        Requires=docker.service
        After=docker.service

        [Service]
        ExecStart=/usr/bin/docker run -d -p 80:80 --name  own-httpd httpd

        [Install]
        WantedBy=multi-user.target