[TOC]
## Ubuntu 18 中安装Docker
* 安装Docker 输入命令：`apt install docker.io -y
`
```
root@ubuntu:/home/guanfuchang# apt install docker.io -y
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
bridge-utils cgroupfs-mount git git-man liberror-perl pigz ubuntu-fan
Suggested packages:
aufs-tools btrfs-progs debootstrap docker-doc rinse zfs-fuse | zfsutils git-daemon-run | git-daemon-sysvinit git-doc git-el git-email git-gui gitk gitweb git-cvs git-mediawiki git-svn
The following NEW packages will be installed:
bridge-utils cgroupfs-mount docker.io git git-man liberror-perl pigz ubuntu-fan
0 upgraded, 8 newly installed, 0 to remove and 296 not upgraded.
Need to get 45.0 MB of archives.
After this operation, 232 MB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 pigz amd64 2.4-1 [57.4 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 bridge-utils amd64 1.5-15ubuntu1 [30.1 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 cgroupfs-mount all 1.4 [6,320 B]
Get:4 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 docker.io amd64 18.06.1-0ubuntu1~18.04.1 [40.2 MB]
Get:4 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 docker.io amd64 18.06.1-0ubuntu1~18.04.1 [40.2 MB]
Get:4 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 docker.io amd64 18.06.1-0ubuntu1~18.04.1 [40.2 MB]
Get:5 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 liberror-perl all 0.17025-1 [22.8 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 git-man all 1:2.17.1-1ubuntu0.3 [803 kB]
Get:7 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 git amd64 1:2.17.1-1ubuntu0.3 [3,898 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 ubuntu-fan all 0.12.10 [34.7 kB]
Fetched 11.8 MB in 11min 43s (16.7 kB/s)
Preconfiguring packages ...
Selecting previously unselected package pigz.
(Reading database ... 128796 files and directories currently installed.)
Preparing to unpack .../0-pigz_2.4-1_amd64.deb ...
Unpacking pigz (2.4-1) ...
Selecting previously unselected package bridge-utils.
Preparing to unpack .../1-bridge-utils_1.5-15ubuntu1_amd64.deb ...
Unpacking bridge-utils (1.5-15ubuntu1) ...
Selecting previously unselected package cgroupfs-mount.
Preparing to unpack .../2-cgroupfs-mount_1.4_all.deb ...
Unpacking cgroupfs-mount (1.4) ...
Selecting previously unselected package docker.io.
Preparing to unpack .../3-docker.io_18.06.1-0ubuntu1~18.04.1_amd64.deb ...
Unpacking docker.io (18.06.1-0ubuntu1~18.04.1) ...
Selecting previously unselected package liberror-perl.
Preparing to unpack .../4-liberror-perl_0.17025-1_all.deb ...
Unpacking liberror-perl (0.17025-1) ...
Selecting previously unselected package git-man.
Preparing to unpack .../5-git-man_1%3a2.17.1-1ubuntu0.3_all.deb ...
Unpacking git-man (1:2.17.1-1ubuntu0.3) ...
Selecting previously unselected package git.
Preparing to unpack .../6-git_1%3a2.17.1-1ubuntu0.3_amd64.deb ...
Unpacking git (1:2.17.1-1ubuntu0.3) ...
Selecting previously unselected package ubuntu-fan.
Preparing to unpack .../7-ubuntu-fan_0.12.10_all.deb ...
Unpacking ubuntu-fan (0.12.10) ...
Setting up git-man (1:2.17.1-1ubuntu0.3) ...
Setting up docker.io (18.06.1-0ubuntu1~18.04.1) ...
Adding group `docker' (GID 127) ...
Done.
Created symlink /etc/systemd/system/sockets.target.wants/docker.socket 鈫/lib/systemd/system/docker.socket.
Processing triggers for ureadahead (0.100.0-20) ...
Setting up liberror-perl (0.17025-1) ...
Setting up cgroupfs-mount (1.4) ...
Setting up bridge-utils (1.5-15ubuntu1) ...
Setting up ubuntu-fan (0.12.10) ...
Created symlink /etc/systemd/system/multi-user.target.wants/ubuntu-fan.service 鈫/lib/systemd/system/ubuntu-fan.service.
Processing triggers for systemd (237-3ubuntu10.3) ...
Processing triggers for man-db (2.8.3-2) ...
Setting up pigz (2.4-1) ...
Setting up git (1:2.17.1-1ubuntu0.3) ...
Processing triggers for ureadahead (0.100.0-20) ...
```
## 查看Docker安装信息
### 查看Docker版本，命令：`docker version`
```
root@ubuntu:/home/guanfuchang# docker version
Client:
Version: 18.06.1-ce
API version: 1.38
Go version: go1.10.4
Git commit: e68fc7a
Built: Fri Oct 19 19:43:14 2018
OS/Arch: linux/amd64
Experimental: false
Server:
Engine:
Version: 18.06.1-ce
API version: 1.38 (minimum version 1.12)
Go version: go1.10.4
Git commit: e68fc7a
Built: Thu Sep 27 02:39:50 2018
OS/Arch: linux/amd64
Experimental: false
```
### 查看Docker运行信息，命令： `docker info`
```
root@ubuntu:/home/guanfuchang# docker info
Containers: 2
Running: 1
Paused: 0
Stopped: 1
Images: 1
Server Version: 18.06.1-ce
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: (expected: 468a545b9edcd5932818eb9de8e72413e616e86e)
runc version: N/A (expected: 69663f0bd4b60df09991c08812a60108003fa340)
init version: v0.18.0 (expected: fec3683b971d9c3ef73f284f176672c44b448662)
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 4.15.0-29-generic
Operating System: Ubuntu 18.04.1 LTS
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 1.924GiB
Name: ubuntu
ID: R2AB:BQWA:UHTP:523R:7VDY:ZHZV:VZQK:OLF7:2PN4:FTGX:EO72:URDZ
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: No swap limit support
```
### 检查安装是否正确, 命令：`docker run hello-world`
```
root@ubuntu:/home/guanfuchang# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
d1725b59e92d: Pull complete
Digest: sha256:0add3ace90ecb4adbf7777e9aacf18357296e799f81cabc9fde470971e499788
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
root@ubuntu:/home/guanfuchang#
```
---
:-: 
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