[Unit]
Description=Dogtamer Container
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
Restart=always
ExecStartPre=-/usr/bin/docker stop dogtamer
ExecStartPre=-/usr/bin/docker rm dogtamer
ExecStart=/usr/bin/docker run -p 5566:5566 \
  --name dogtamer dogtamer:latest

[Install]
WantedBy=multi-user.target