hpc-cloud/roles/horizon/templates/horizon.service

[Unit]
Description=Openstack Glance Container
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
Restart=always
ExecStartPre=-/usr/bin/docker kill %n
ExecStartPre=-/usr/bin/docker rm %n
ExecStart=/usr/bin/docker run --name %n \
  -e "MEMCACHED_SERVER={{ hostvars[groups['memcached'][0]]['ansible_default_ipv4']['address'] }}" \
  -e "KEYSTONE_HOST={{ hostvars[groups['keystone'][0]]['ansible_default_ipv4']['address'] }}" \
  --add-host=keystone:{{ hostvars[groups['keystone'][0]]['ansible_default_ipv4']['address'] }} \
  -p 80:80 \
  {{ docker_image }}

[Install]
WantedBy=multi-user.target