yum localdownload and install by docker

 1. https://www.slothparadise.com/how-to-download-yum-packages-locally/ 

2. https://unix.stackexchange.com/questions/50642/download-all-dependencies-with-yumdownloader-even-if-already-installed

3. good ch

https://ephrain.net/linux-%E5%9C%A8-centos-%E4%B8%8A%E4%BD%BF%E7%94%A8-yum%EF%BC%8C%E4%B8%8B%E8%BC%89%E6%89%80%E6%9C%89%E7%9B%B8%E9%97%9C%E8%81%AF%E7%9A%84-rpm-%E5%A5%97%E4%BB%B6/

4. 

https://unix.stackexchange.com/questions/151689/how-can-i-instruct-yum-to-install-a-specific-version-of-package-x

5. good ch install docker

https://www.stepbystep.tw/blog/post/118700937-centos-7-%E5%AE%89%E8%A3%9D-docker-ce

6. rpm list

https://phoenixnap.com/kb/how-to-install-rpm-file-centos-linux

7. office install docker

https://docs.docker.com/engine/install/centos/

8. rpm list 

https://linuxhint.com/check-available-package-yum/