markdown mac_hide_active_dock_icon

Posted 2021-05-06

macOS Version: 10.13.3~

[Refer Link](https://stackoverflow.com/questions/44058080/hiding-osx-sierra-dock-icons-from-files)

in app content location:

add 
```html
<key>LSBackgroundOnly</key>
<string>YES</string>
```

above this codes
```html
</dict>
</plist>
```

__Warning__

May cause some probs when restarting system.