Install Sphinx Search 2 on Ubuntu 20.04

參考這裡的安裝說明：

https://ubuntu.pkgs.org/20.04/ubuntu-universe-arm64/sphinxsearch_2.2.11-2ubuntu2_arm64.deb.html

執行以下命令：

$ sudo apt-get update

$ sudo apt-get install sphinxsearch

$ searchd

Sphinx 2.2.11-id64-release (95ae9a6)
Copyright (c) 2001-2016, Andrew Aksyonoff
Copyright (c) 2008-2016, Sphinx Technologies Inc (http://sphinxsearch.com)