我正在尝试在系统重启后在Ubuntu 16.04中运行docker。我为它创建了服务“/etc/systemd/system/openvpnBOX.service”：
[Unit]
Description=Openvpn Docker
[Service]
User=root
ExecStart=/etc/init/openvpn.conf
[Install]
WantedBy=multi-user.target
Alias=openvpnBOX.service
openvpn.conf：
#!/bin/bash
exec docker run --volumes-from ovpn-data --rm -p 1194:1194/udp --cap- add=NET_ADMIN kylemanna/openvpn
当我正在运行此服务时“sudo service openvpnBOX start我看到该服务正在运行，但是当我重启系统时，重新启动后我看到该服务无法启动：
"sudo service openvpnBOX status"
● openvpnBOX.service - Openvpn Docker
Loaded: loaded (/etc/systemd/system/openvpnBOX.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sun 2017-10-01 21:35:48 SST; 2min 51s ago
Process: 1771 ExecStart=/etc/init/openvpn.conf (code=exited, status=1/FAILURE)
Main PID: 1771 (code=exited, status=1/FAILURE)
Oct 01 21:35:48 systemd[1]: openvpnBOX.service: Main process exited, code=exited, status=1/FAILURE
Oct 01 21:35:48 systemd[1]: openvpnBOX.service: Unit entered failed state.
Oct 01 21:35:48 systemd[1]: openvpnBOX.service: Failed with result 'exit-code'.
Oct 01 21:35:48 systemd[1]: Started Openvpn Docker.
Oct 01 21:35:48 openvpn.conf[1771]: Error response from daemon: 404 page not found
Oct 01 21:35:48 systemd[1]: openvpnBOX.service: Main process exited, code=exited, status=1/FAILURE
Oct 01 21:35:48 systemd[1]: openvpnBOX.service: Unit entered failed state.
Oct 01 21:35:48 systemd[1]: openvpnBOX.service: Failed with result 'exit-code'.
Oct 01 21:35:48 systemd[1]: openvpnBOX.service: Start request repeated too quickly.
Oct 01 21:35:48 systemd[1]: Failed to start Openvpn Docker.
我可以使用"sudo docker run --restart=always --volumes-from ovpn-data -p 1194:1194/udp --cap-add=NET_ADMIN kylemanna/openvpn"，但它无法解决我的问题，因为我想知道为什么我的服务在重启后无效。
有什么想法吗？