Create service
make file in /etc/systemd/system/
cd /etc/systemd/system nano /docker-[containername].service
Insert following code:
[Unit] Description=Docker [containername] server Requires=docker.service After=docker.service [Service] Restart=always ExecStart=/usr/bin/docker start -a [containername] ExecStop=/usr/bin/docker stop -t 2 [containername] [Install] WantedBy=default.target
Add service to systemd
systemctl enable docker-[containername].service
When system reboots, service will be started.