11.2. docker基础
11.2.1. docker安装
centos7配置docker源并安装docker
1[root@centos-151 ~]# cd /etc/yum.repos.d/
2[root@centos-151 yum.repos.d]# ls
3bak CentOS-Base.repo epel.repo mariadb.repo.bak
4[root@centos-151 yum.repos.d]# wget http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
5
6[root@centos-151 ~]# yum install docker
CentOS6通过 epel-release 来安装docker
- epel-release:
Enterprise Linux（或EPEL）的额外软件包,企业Linux额外包（EPEL）
- RHEL / CentOS 6：
#yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
- RHEL / CentOS 7：
#yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
注意
一般可以通过 yum install epel-release -y 来安装。
安装完 epel-release 以后，可以查看docker安装信息:
CentOS6安装docker:
1yum install docker-io -y
1rpm -qa docker-io
2rpm -ql docker-io
11.2.1.1. 配置docker开机自启动
CentOS7:
1[root@centos-151 ~]# systemctl enable docker
2#启动docker
3[root@centos-151 ~]# systemctl start docker
CentOS6:
1chkconfig docker on
2#启动docker
3/etc/init.d/docker start
11.2.2. docker信息获取
获取version
注意
查看docker版本信息，需要先启动docker。如果没有启动是不能查看的。
1[root@zzjlogin ~]# docker version
2Client version: 1.7.1
3Client API version: 1.19
4Go version (client): go1.4.2
5Git commit (client): 786b29d/1.7.1
6OS/Arch (client): linux/amd64
7Server version: 1.7.1
8Server API version: 1.19
9Go version (server): go1.4.2
10Git commit (server): 786b29d/1.7.1
11OS/Arch (server): linux/amd64
获取info
1[root@zzjlogin ~]# docker info
2Containers: 0
3Images: 0
4Storage Driver: devicemapper
5Pool Name: docker-8:3-40736-pool
6Pool Blocksize: 65.54 kB
7Backing Filesystem: extfs
8Data file: /dev/loop0
9Metadata file: /dev/loop1
10Data Space Used: 305.7 MB
11Data Space Total: 107.4 GB
12Data Space Available: 656.1 MB
13Metadata Space Used: 729.1 kB
14Metadata Space Total: 2.147 GB
15Metadata Space Available: 656.1 MB
16Udev Sync Supported: true
17Deferred Removal Enabled: false
18Data loop file: /var/lib/docker/devicemapper/devicemapper/data
19Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
20Library Version: 1.02.89-RHEL6 (2014-09-01)
21Execution Driver: native-0.2
22Logging Driver: json-file
23Kernel Version: 2.6.32-504.el6.x86_64
24Operating System: <unknown>
25CPUs: 1
26Total Memory: 980.8 MiB
27Name: zzjlogin
28ID: GAII:U77Y:CUAH:NJ7Y:XE6M:SB7I:UD3Z:UHVO:VPDZ:RONM:7VQH:MMZ3
11.2.3. docker常用命令
1docker run 运行一个容器
2docker create 创建，需要在配合start命令
3docker start 启动一个创建好的容器
4docker stop 停止容器
5docker kill 杀掉容器
6docker restart 重启容器
7docker pause 暂停容器
8docker search 查询registry的相关镜像
9docker pull 从registry拉取镜像
10docker push 推送到registry
11docker save 保存成压缩包
12docker load 从压缩包加载进来
13docker log 查看日志信息
14docker info 查看docker信息
15docker version 查看docker版本
16docker inspect 查看镜像容器信息
17docker images 查看已有镜像信息
18docker rm 删除容器
1[root@centos-151 ~]# docker
2build diff history inspect logs port restart search stats top wait
3commit events image kill network ps rm secret stop unpause
4container exec images load node pull rmi service swarm update
5cp export import login pause push run stack system version
6create help info logout plugin rename save start tag volume
11.2.4. docker run常用命令
1[root@centos-151 ~]# docker help run
2
3Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
4
5Run a command in a new container
6
7Options:
8 --add-host list Add a custom host-to-IP mapping (host:ip) (default [])
9-a, --attach list Attach to STDIN, STDOUT or STDERR (default [])
10 --blkio-weight uint16 Block IO (relative weight), between 10 and 1000, or 0 to disable (default 0)
11 --blkio-weight-device weighted-device Block IO weight (relative device weight) (default [])
12 --cap-add list Add Linux capabilities (default [])
13 --cap-drop list Drop Linux capabilities (default [])
14 --cgroup-parent string Optional parent cgroup for the container
15 --cidfile string Write the container ID to the file
16 --cpu-count int CPU count (Windows only)
17 --cpu-percent int CPU percent (Windows only)
18 --cpu-period int Limit CPU CFS (Completely Fair Scheduler) period
19 --cpu-quota int Limit CPU CFS (Completely Fair Scheduler) quota
20 --cpu-rt-period int Limit CPU real-time period in microseconds
21 --cpu-rt-runtime int Limit CPU real-time runtime in microseconds
22-c, --cpu-shares int CPU shares (relative weight)
23 --cpus decimal Number of CPUs (default 0.000)
24 --cpuset-cpus string CPUs in which to allow execution (0-3, 0,1)
25 --cpuset-mems string MEMs in which to allow execution (0-3, 0,1)
26 --credentialspec string Credential spec for managed service account (Windows only)
27-d, --detach Run container in background and print container ID
28 --detach-keys string Override the key sequence for detaching a container
29 --device list Add a host device to the container (default [])
30 --device-read-bps throttled-device Limit read rate (bytes per second) from a device (default [])
31 --device-read-iops throttled-device Limit read rate (IO per second) from a device (default [])
32 --device-write-bps throttled-device Limit write rate (bytes per second) to a device (default [])
33 --device-write-iops throttled-device Limit write rate (IO per second) to a device (default [])
34 --disable-content-trust Skip image verification (default true)
35 --dns list Set custom DNS servers (default [])
36 --dns-option list Set DNS options (default [])
37 --dns-search list Set custom DNS search domains (default [])
38 --entrypoint string Overwrite the default ENTRYPOINT of the image
39-e, --env list Set environment variables (default [])
40 --env-file list Read in a file of environment variables (default [])
41 --expose list Expose a port or a range of ports (default [])
42 --group-add list Add additional groups to join (default [])
43 --health-cmd string Command to run to check health
44 --health-interval duration Time between running the check (ns|us|ms|s|m|h) (default 0s)
45 --health-retries int Consecutive failures needed to report unhealthy
46 --health-timeout duration Maximum time to allow one check to run (ns|us|ms|s|m|h) (default 0s)
47 --help Print usage
48-h, --hostname string Container host name
49 --init Run an init inside the container that forwards signals and reaps processes
50 --init-path string Path to the docker-init binary
51-i, --interactive Keep STDIN open even if not attached
52 --io-maxbandwidth string Maximum IO bandwidth limit for the system drive (Windows only)
53 --io-maxiops uint Maximum IOps limit for the system drive (Windows only)
54 --ip string Container IPv4 address (e.g. 172.30.100.104)
55 --ip6 string Container IPv6 address (e.g. 2001:db8::33)
56 --ipc string IPC namespace to use
57 --isolation string Container isolation technology
58 --kernel-memory string Kernel memory limit
59-l, --label list Set meta data on a container (default [])
60 --label-file list Read in a line delimited file of labels (default [])
61 --link list Add link to another container (default [])
62 --link-local-ip list Container IPv4/IPv6 link-local addresses (default [])
63 --log-driver string Logging driver for the container
64 --log-opt list Log driver options (default [])
65 --mac-address string Container MAC address (e.g. 92:d0:c6:0a:29:33)
66-m, --memory string Memory limit
67 --memory-reservation string Memory soft limit
68 --memory-swap string Swap limit equal to memory plus swap: '-1' to enable unlimited swap
69 --memory-swappiness int Tune container memory swappiness (0 to 100) (default -1)
70 --name string Assign a name to the container
71 --network string Connect a container to a network (default "default")
72 --network-alias list Add network-scoped alias for the container (default [])
73 --no-healthcheck Disable any container-specified HEALTHCHECK
74 --oom-kill-disable Disable OOM Killer
75 --oom-score-adj int Tune host's OOM preferences (-1000 to 1000)
76 --pid string PID namespace to use
77 --pids-limit int Tune container pids limit (set -1 for unlimited)
78 --privileged Give extended privileges to this container
79-p, --publish list Publish a container's port(s) to the host (default [])
80-P, --publish-all Publish all exposed ports to random ports
81 --read-only Mount the container's root filesystem as read only
82 --restart string Restart policy to apply when a container exits (default "no")
83 --rm Automatically remove the container when it exits
84 --runtime string Runtime to use for this container
85 --security-opt list Security Options (default [])
86 --shm-size string Size of /dev/shm, default value is 64MB
87 --sig-proxy Proxy received signals to the process (default true)
88 --stop-signal string Signal to stop a container, SIGTERM by default (default "SIGTERM")
89 --stop-timeout int Timeout (in seconds) to stop a container
90 --storage-opt list Storage driver options for the container (default [])
91 --sysctl map Sysctl options (default map[])
92 --tmpfs list Mount a tmpfs directory (default [])
93-t, --tty Allocate a pseudo-TTY
94 --ulimit ulimit Ulimit options (default [])
95-u, --user string Username or UID (format: <name|uid>[:<group|gid>])
96 --userns string User namespace to use
97 --uts string UTS namespace to use
98-v, --volume list Bind mount a volume (default [])
99 --volume-driver string Optional volume driver for the container
100 --volumes-from list Mount volumes from the specified container(s) (default [])
101-w, --workdir string Working directory inside the container
102
103# 上面就是获取run子命令的方法， 常用的选项是下面几个
104-i： 交互模式
105-t： 分配终端
106-v： 卷设置
107-p： 端口配置
108-h： 主机名
109-a： 附加
110-e: 环境变量
111--rm: 停掉容器就删除
11.2.5. 阿里云使用阿里云docker仓库拉取和分发
11.2.5.1. 阿里云ECS
在拉取和分发之前需要配置下docker加速,因为默认是从dockerhub上拉取的，比较慢，这个可以根据实际情况修改。
- 阿里的docker加速配置:
11.2.5.1.1. docker加速器配置
- 具体步骤:
首先是访问:https://dev.aliyun.com/search.html,然后登陆阿里云账号。
根据镜像加速中的操作文档操作。其中加速地址和账号有关联。根据这个操作文档配置
ECS的docker然后进入
管理中心初次使用设置
Registry登陆密码，这个密码之后从云主机推送或者拉取自建镜像使用。创建
命名空间创建
镜像仓库
注意
创建 镜像仓库 的时候可以选择
备注
上面的加速地址，是阿里云给我分配的加速地址，如果没有阿里云的账号，可以使用docker中国的加速器，地址为https://registry.docker-cn.com
上面具体步骤重点步骤如下图说明：
创建仓库如下图：
提示
创建仓库需要先有命名空间。
如果使用的是代码仓库来创建docker仓库镜像，可以绑定不同的代码平台的账号，具体如下(举例github)：
首先:
然后绑定对应的账号:
根据绑定代码平台账号创建仓库镜像
创建空的仓库，然后推送本地镜像到仓库。
准备下阿里云相关的配置:
11. 登录阿里云Docker Registry
2$ sudo docker login --username=1530225798@qq.com registry.cn-hongkong.aliyuncs.com
3用于登录的用户名为阿里云账号全名，密码为开通服务时设置的密码。
4
5您可以在产品控制台首页修改登录密码。
6
72. 从Registry中拉取镜像
8$ sudo docker pull registry.cn-hongkong.aliyuncs.com/zzjlogin/ceshi:[镜像版本号]
93. 将镜像推送到Registry
10$ sudo docker login --username=1530225798@qq.com registry.cn-hongkong.aliyuncs.com
11$ sudo docker tag [ImageId] registry.cn-hongkong.aliyuncs.com/zzjlogin/ceshi:[镜像版本号]
12$ sudo docker push registry.cn-hongkong.aliyuncs.com/zzjlogin/ceshi:[镜像版本号]
13请根据实际镜像信息替换示例中的[ImageId]和[镜像版本号]参数。
14
154. 选择合适的镜像仓库地址
16从ECS推送镜像时，可以选择使用镜像仓库内网地址。推送速度将得到提升并且将不会损耗您的公网流量。
17
18如果您使用的机器位于经典网络，请使用 registry-internal.cn-hongkong.aliyuncs.com 作为Registry的域名登录，并作为镜像命名空间前缀。
19如果您使用的机器位于VPC网络，请使用 registry-vpc.cn-hongkong.aliyuncs.com 作为Registry的域名登录，并作为镜像命名空间前缀。
205. 示例
21使用"docker tag"命令重命名镜像，并将它通过专有网络地址推送至Registry。
22
23$ sudo docker images
24REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
25registry.aliyuncs.com/acs/agent 0.7-dfb6816 37bb9c63c8b2 7 days ago 37.89 MB
26$ sudo docker tag 37bb9c63c8b2 registry-vpc.cn-hongkong.aliyuncs.com/acs/agent:0.7-dfb6816
27使用"docker images"命令找到镜像，将该镜像名称中的域名部分变更为Registry专有网络地址。
28
29$ sudo docker push registry-vpc.cn-hongkong.aliyuncs.com/acs/agent:0.7-dfb6816
11.2.6. 普通主机使用docker-hub公共镜像pull下来镜像
查找:
1[root@zzjlogin ~]# docker search centos-io
2NAME DESCRIPTION STARS OFFICIAL AUTOMATED
3centos The official build of CentOS. 4679 [OK]
4iojs io.js is an npm compatible platform origin... 127 [OK]
5ansible/centos7-ansible Ansible on Centos7 116 [OK]
6jdeathe/centos-ssh CentOS-6 6.10 x86_64 / CentOS-7 7.5.1804 x... 99 [OK]
7agileek/ionic-framework Run ionic framework 87 [OK]
8openshift/base-centos7 A Centos7 derived base image for Source-To... 33
9beevelop/ionic Latest Ionic based on the latest Cordova, ... 30 [OK]
10iotaledger/iri IOTA Reference Implementation 16 [OK]
11bluedigits/iota-node IOTA Full Node 9 [OK]
12mesosphere/iot-demo IoT demo Docker image. 9 [OK]
13buanet/iobroker Docker Image for ioBroker based on Debian ... 9 [OK]
14pivotaldata/centos-gpdb-dev CentOS image for GPDB development. Tag nam... 7
15asmaps/docker-iodine Dockerized iodine server 6 [OK]
16marcoturi/ionic Ionic image for CI with karma and protract... 5 [OK]
17microsoft/iot-edge-opc-publisher Azure IoT Edge OPC Publisher Module 5 [OK]
18microsoft/iot-gateway-opc-ua-proxy Azure IoT Edge OPC Proxy Module 5 [OK]
19microsoft/iot-edge-opc-proxy Azure IoT Edge OPC Proxy Module 4 [OK]
20iobroker/iobroker This is docker version of ioBroker Home-Au... 3 [OK]
21pivotaldata/centos Base centos, freshened up a little with a ... 2
22plusrseito/centos-ionic 0
23applet/applet-io applet-io repository 0
24cubedhost/tools-3h-io tools-3h-io 0 [OK]
25turistforeningen/ruby-iojs Docker Image with Ruby and io.js installed 0 [OK]
26aerogearcatalog/ios-app-apb APB for creating an iOS App 0 [OK]
27oblique/iodined Docker image for iodine server 0 [OK]
把镜像下载到本地:
1[root@zzjlogin ~]# docker pull centos
2latest: Pulling from centos
3675ac122cafb: Pull complete
4a4875ffe6057: Pull complete
5c5507be714a7: Pull complete
6Digest: sha256:5d91c5535c41fd1bb48d40581a2c8b53d38fc2eb26df774556b53c5a0bd4d44e
7Status: Downloaded newer image for centos:latest
8[root@zzjlogin ~]# docker images
9REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
10centos latest c5507be714a7 5 weeks ago 199.7 MB
11.2.6.1. 镜像保存(save)
1[root@centos-151 yum.repos.d]# docker save busybox alpine | gzip > tree.tgz
2[root@centos-151 yum.repos.d]# scp tree.tgz 192.168.46.152:/root
11.2.6.2. 镜像加载(load)
1[root@centos-152 ~]# docker help load
2[root@centos-152 ~]# docker image load -i tree.tgz
33e596351c689: Loading layer [==================================================>] 1.36 MB/1.36 MB
4Loaded image: docker.io/busybox:latest
5cd7100a72410: Loading layer [==================================================>] 4.403 MB/4.403 MB
6Loaded image: docker.io/alpine:latest
7[root@centos-152 ~]# docker image ls
8REPOSITORY TAG IMAGE ID CREATED SIZE
9docker.io/busybox latest 2716f21dc1e3 37 hours ago 1.15 MB
10docker.io/alpine latest 3fd9065eaf02 2 months ago 4.15 MB
11.2.7. docker卷(Volumes)
docker的卷分为2种
bind挂载卷
docker自管理卷
注意
可以通过这些参数，映射本地文件到docker，这样可以达到docker和本地文件的共享。
1[root@centos-151 ~]# docker run --name nginx03 -v /data:/usr/share/nginx/html -d nginx:1.12-alpine
230a8824241a92439547ac5918f75404d3f9953b987c61e0cbada0efe67ef7463
3
4[root@centos-151 ~]# mkdir /data
5[root@centos-151 ~]# echo "my page" > /data/index.html
6[root@centos-151 ~]# docker inspect nginx03 |grep -i ipa
7 "SecondaryIPAddresses": null,
8 "IPAddress": "172.17.0.3",
9 "IPAMConfig": null,
10 "IPAddress": "172.17.0.3",
11
12[root@centos-151 ~]# curl 172.17.0.3
13my page
14# 查看ip信息还有比较好用的方法，个人不习惯用
15[root@centos-151 ~]# docker inspect -f {{.NetworkSettings.Networks.bridge.IPAddress}} nginx03
16172.17.0.3
17
18# 查看bind信息
19[root@centos-151 ~]# docker inspect -f {{.Mounts}} nginx03
20[{bind /data /usr/share/nginx/html true rprivate}]
21# 复制卷信息，去启动
22[root@centos-151 ~]# docker run -d --name nginx04 --volumes-from nginx03 nginx:1.12-alpine
23ab414efa85818929d837c2baeb7a271b042eb46ac8ec40431c3d9b33ab6eee07
11.2.8. docker网络
docker的网络分为四种
closed: 封闭的， 只有lo本地回环网卡
bridged: 桥接，这是默认的
joined: 连接的，多个docker公用一个network命名空间
opened: 开放的，和宿主机一个命名空间
11.2.8.1. 查看网络列表
1[root@centos-151 ~]# docker network ls
2NETWORK ID NAME DRIVER SCOPE
3e00b7e276b12 bridge bridge local
442c62865be61 host host local
5ccb7572950be none null local
11.2.8.2. bridge
1[root@centos-151 ~]# docker run --name busybox10 -it busybox
2/ # ifconfig
3eth0 Link encap:Ethernet HWaddr 02:42:AC:11:00:05
4 inet addr:172.17.0.5 Bcast:0.0.0.0 Mask:255.255.0.0
5 inet6 addr: fe80::42:acff:fe11:5/64 Scope:Link
6 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
7 RX packets:6 errors:0 dropped:0 overruns:0 frame:0
8 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
9 collisions:0 txqueuelen:0
10 RX bytes:508 (508.0 B) TX bytes:508 (508.0 B)
11
12lo Link encap:Local Loopback
13 inet addr:127.0.0.1 Mask:255.0.0.0
14 inet6 addr: ::1/128 Scope:Host
15 UP LOOPBACK RUNNING MTU:65536 Metric:1
16 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
17 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
18 collisions:0 txqueuelen:1
19 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
20
21/ # ^C
22/ # exit
11.2.8.3. closed
1[root@centos-151 ~]# docker run --name busybox11 -it --network none busybox
2/ # ifconfig
3lo Link encap:Local Loopback
4 inet addr:127.0.0.1 Mask:255.0.0.0
5 inet6 addr: ::1/128 Scope:Host
6 UP LOOPBACK RUNNING MTU:65536 Metric:1
7 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
8 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
9 collisions:0 txqueuelen:1
10 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
11
12/ # exit
11.2.8.4. joined
1[root@centos-151 ~]# docker run --name nginx11 -d --rm nginx:1.12-alpine
2cf5e89cddf175152472d25d51d52ae1e136bc5887682f24203bb178487674103
3[root@centos-151 ~]# docker inspect nginx11 |grep -i ipa
4 "SecondaryIPAddresses": null,
5 "IPAddress": "172.17.0.5",
6 "IPAMConfig": null,
7 "IPAddress": "172.17.0.5",
8[root@centos-151 ~]# docker run --name busybox12 --rm -it --network container:nginx11 busybox
9/ # curl localhost
10sh: curl: not found
11/ # wget localhost
12Connecting to localhost (127.0.0.1:80)
13index.html 100% |**************************************************************************************************************************************************| 612 0:00:00 ETA
14/ # cat index.html
15<!DOCTYPE html>
16<html>
17<head>
18<title>Welcome to nginx!</title>
19<style>
20 body {
21 width: 35em;
22 margin: 0 auto;
23 font-family: Tahoma, Verdana, Arial, sans-serif;
24 }
25</style>
26</head>
27<body>
28<h1>Welcome to nginx!</h1>
29<p>If you see this page, the nginx web server is successfully installed and
30working. Further configuration is required.</p>
31
32<p>For online documentation and support please refer to
33<a href="http://nginx.org/">nginx.org</a>.<br/>
34Commercial support is available at
35<a href="http://nginx.com/">nginx.com</a>.</p>
36
37<p><em>Thank you for using nginx.</em></p>
38</body>
39</html>
11.2.8.5. opened
1[root@centos-151 ~]# docker run --name nginx15 -d --network host nginx:1.12-alpine
2f0fd0f9069cab8126c53cde3baa8d76a94e89abd709a7864b96bfeb400628677
3[root@centos-151 ~]# docker inspect nginx15 |grep -i ipa
4 "SecondaryIPAddresses": null,
5 "IPAddress": "",
6 "IPAMConfig": null,
7 "IPAddress": "",
8[root@centos-151 ~]# curl localhost
9<!DOCTYPE html>
10<html>
11<head>
12<title>Welcome to nginx!</title>
13<style>
14 body {
15 width: 35em;
16 margin: 0 auto;
17 font-family: Tahoma, Verdana, Arial, sans-serif;
18 }
19</style>
20</head>
21<body>
22<h1>Welcome to nginx!</h1>
23<p>If you see this page, the nginx web server is successfully installed and
24working. Further configuration is required.</p>
25
26<p>For online documentation and support please refer to
27<a href="http://nginx.org/">nginx.org</a>.<br/>
28Commercial support is available at
29<a href="http://nginx.com/">nginx.com</a>.</p>
30
31<p><em>Thank you for using nginx.</em></p>
32</body>
33</html>
11.2.9. docker端口映射
1[root@centos-151 ~]# docker run --name nginx17 -d -p 80:80 nginx:1.12-alpine
2dda9ec45687aa71d552a32e65bb7d703a1b2170ea57416543a67e2055e1f5052
3
4
5[root@centos-152 ~]# clear
6[root@centos-152 ~]# curl 192.168.46.151
7<!DOCTYPE html>
8<html>
9<head>
10<title>Welcome to nginx!</title>
11<style>
12 body {
13 width: 35em;
14 margin: 0 auto;
15 font-family: Tahoma, Verdana, Arial, sans-serif;
16 }
17</style>
18</head>
19<body>
20<h1>Welcome to nginx!</h1>
21<p>If you see this page, the nginx web server is successfully installed and
22working. Further configuration is required.</p>
23
24<p>For online documentation and support please refer to
25<a href="http://nginx.org/">nginx.org</a>.<br/>
26Commercial support is available at
27<a href="http://nginx.com/">nginx.com</a>.</p>
28
29<p><em>Thank you for using nginx.</em></p>
30</body>
31</html>
查看映射
1[root@centos-151 ~]# docker port nginx17
280/tcp -> 0.0.0.0:80