[Unit]
Description=Bind9 DNS Server
After=docker.service
Requires=docker.service

[Service]
ExecStart=/usr/bin/bash -c '/usr/bin/docker start -a dns || /usr/bin/docker run -p 53:53 -p 53:53/udp -v /etc/bind --name dns -i -t nino/dns:latest /bin/bash'
ExecStop=/usr/bin/docker stop dns

[Install]
WantedBy=multi-user.target