Docker Images 內的狀態查看方式

因為愈來愈多的機會會取用到 Docker Hub 上的 images , 所以整理一下可以快速用這個 image 啟動一個 docker container 來看 images 內的系統版本與檔案相關路徑等資訊

• docker run -i -t <image> <shell cmd> Exp. php image

  docker run -i -t php:7.0.33-cli-jessie bash

• 查看作業系統版本

  root@ef8c2a5ab946:/# cat /etc/issue
  Debian GNU/Linux 8 \n \l

• 查看 php 版本與路徑

  root@ef8c2a5ab946:/# php -v
  PHP 7.0.33 (cli) (built: Dec 29 2018 07:12:20) ( NTS )
  Copyright (c) 1997-2017 The PHP Group
  Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
  root@ef8c2a5ab946:/# which php
  /usr/local/bin/php
  root@ef8c2a5ab946:/usr/local/src# ls -l /usr/local/
  total 40
  drwxrwsr-x 1 root staff 4096 Dec 29  2018 bin
  drwxrwsr-x 1 root staff 4096 Dec 29  2018 etc
  drwxrwsr-x 2 root staff 4096 Dec 26  2018 games
  drwxrwsr-x 1 root staff 4096 Dec 29  2018 include
  drwxrwsr-x 1 root staff 4096 Dec 29  2018 lib
  lrwxrwxrwx 1 root staff    9 Dec 26  2018 man -> share/man
  drwxr-sr-x 3 root staff 4096 Dec 29  2018 php
  drwxrwsr-x 2 root staff 4096 Dec 26  2018 sbin
  drwxrwsr-x 1 root staff 4096 Dec 29  2018 share
  drwxrwsr-x 2 root staff 4096 Dec 26  2018 src
  drwxr-sr-x 4 root staff 4096 Dec 29  2018 var