统计信息
events
用法：docker events [OPTIONS]
功能：从docker daemon中获取实时事件
选项：
--since="" 显示指定时间戳之后的事件
--until="" 显示直到指定时间戳的事件
示例：
该示例中，执行docker events后，用docker run创建并启动一个容器，docker events将输出create事件和start事件。
# sudo docker events
2019-08-28T16:23:09.338838795+08:00 container create 53450588a20800d8231aa1dc4439a734e16955387efb5f259c47737dba9e2b5e (image=busybox:latest, name=eager_wu)
2019-08-28T16:23:09.339909205+08:00 container attach 53450588a20800d8231aa1dc4439a734e16955387efb5f259c47737dba9e2b5e (image=busybox:latest, name=eager_wu)
2019-08-28T16:23:09.397717518+08:00 network connect e2e20f52662f1ee2b01545da3b02e5ec7ff9c85adf688dce89a9eb73661dedaa (container=53450588a20800d8231aa1dc4439a734e16955387efb5f259c47737dba9e2b5e, name=bridge, type=bridge)
2019-08-28T16:23:09.922224724+08:00 container start 53450588a20800d8231aa1dc4439a734e16955387efb5f259c47737dba9e2b5e (image=busybox:latest, name=eager_wu)
2019-08-28T16:23:09.924121158+08:00 container resize 53450588a20800d8231aa1dc4439a734e16955387efb5f259c47737dba9e2b5e (height=48, image=busybox:latest, name=eager_wu, width=210)
info
用法：docker info
功能：显示docker系统级的相关信息，包括系统中的Container数量、Image数量、Image的存储驱动、容器的执行驱动、内核版本、主机操作系统版本等信息。
选项：无
示例：
# sudo docker info
Containers: 4
Running: 3
Paused: 0
Stopped: 1
Images: 45
Server Version: 18.09.0
Storage Driver: devicemapper
Pool Name: docker-thinpool
Pool Blocksize: 524.3kB
Base Device Size: 10.74GB
Backing Filesystem: ext4
Udev Sync Supported: true
Data Space Used: 11GB
Data Space Total: 51GB
Data Space Available: 39.99GB
Metadata Space Used: 5.083MB
Metadata Space Total: 532.7MB
Metadata Space Available: 527.6MB
Thin Pool Minimum Free Space: 5.1GB
Deferred Removal Enabled: true
Deferred Deletion Enabled: true
Deferred Deleted Device Count: 0
......
version
用法：docker version
功能：显示docker的版本信息，包括Client版本、Server版本、Go版本、OS/Arch等信息
选项：无
示例：
# sudo docker version
Client:
Version: 18.09.0
EulerVersion: 18.09.0.48
API version: 1.39
Go version: go1.11
Git commit: cbf6283
Built: Mon Apr 1 00:00:00 2019
OS/Arch: linux/arm64
Experimental: false
Server:
Engine:
Version: 18.09.0
EulerVersion: 18.09.0.48
API version: 1.39 (minimum version 1.12)
Go version: go1.11
Git commit: cbf6283
Built: Mon Apr 1 00:00:00 2019
OS/Arch: linux/arm64
Experimental: false
文档捉虫
