我有一个systemd具有以下单元文件的服务
[Unit]
Description=Custom service
After=network.target
[Service]
ExecStart=/usr/local/bin/my-script
Restart=always
Environment=FOO=BAR
StandardOutput=append:/var/log/my-service/out.log
StandardError=append:/var/log/my-service/err.log
但是，虚拟机重新启动后，它不会重新启动。
当我尝试启用它时，我得到以下信息
sudo systemctl enable my-service.service
The unit files have no installation config (WantedBy=, RequiredBy=, Also=,
Alias= settings in the [Install] section, and DefaultInstance= for template
units). This means they are not meant to be enabled using systemctl.
Possible reasons for having this kind of units are:
• A unit may be statically enabled by being symlinked from another unit's
.wants/ or .requires/ directory.
• A unit's purpose may be to act as a helper for some other unit which has
a requirement dependency on it.
• A unit may be started when needed via activation (socket, path, timer,
D-Bus, udev, scripted systemctl call, ...).
• In case of template units, the unit is meant to be enabled with some
instance name specified.
我应该为单元文件选择上述哪些选项？
我只想在每次重新启动后启动我的服务。