deepin, UOS install remmina

Installation reference address
1, check the available version

kong8@kong:~$ sudo apt policy remmina
remmina:
  已安装：(无)
  候选： 1.4.8+dfsg-2
  版本列表：
     1.4.8+dfsg-2 500
        500 https://home-store-packages.chinauos.com/appstore eagle/appstore amd64 Packages
     1.3.3+dfsg-2 500
        500 https://home-packages.chinauos.com/home plum/main amd64 Packages
     1.3.3+dfsg-2~bpo9+1 100
        100 http://ftp.debian.org/debian stretch-backports/main amd64 Packages

2. Installation:
sudo apt install remmina=1.4.8+dfsg-2