Docker测试环境笔记
构建Sinatra应用程序
[root@dockerWEBrickDocker]# vim Dockerfile
FROM ubuntu
MAINTAINER wyfTurnbull huisebug@outlook.com
ENV REFRSHED_AT2017-06-28
RUN apt-get update
RUN apt-get -y installruby ruby-dev build-essential redis-tools
RUN gem install--no-rdoc --no-ri sinatra json redis
RUN mkdir -p/opt/webapp
EXPOSE 4567
CMD ["/opt/webapp/bin/webapp" ]
~
构建后
[root@dockerWEBrickDocker]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu/sinatra 1 4d46ed419d3d 18 minutes ago 386MB
unbuntu/nginx 1 d39894d30c41 5 hours ago 214MB
localhost:5000/wyf/huisebug 1 1a4b54d5d019 25 hours ago 257MB
[root@dockerWEBrickDocker]# wget --cut-dirs=3 -nH -r --no-parenthttp://dockerbook.com/code/5/sinatra/webapp/
--2017-06-2815:48:36-- http://dockerbook.com/code/5/sinatra/webapp/
正在解析主机dockerbook.com (dockerbook.com)... 104.236.224.80, fe80::601:acff:fe91:a301
正在连接dockerbook.com (dockerbook.com)|104.236.224.80|:80... 已连接。
已发出 HTTP 请求，正在等待回应... 302 Found
位置：https://dockerbook.com/code/5/sinatra/webapp/[跟随至新的 URL]
--2017-06-2815:48:39-- https://dockerbook.com/code/5/sinatra/webapp/
正在连接dockerbook.com (dockerbook.com)|104.236.224.80|:443... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：528[text/html]
正在保存至:“webapp/index.html”
100%[==========================================================================================>]528 --.-K/s 用时 0s
2017-06-2815:48:41 (19.4 MB/s) - 已保存 “webapp/index.html” [528/528])
正在载入robots.txt；请忽略错误消息。
--2017-06-2815:48:41-- https://dockerbook.com/robots.txt
再次使用存在的到dockerbook.com:443 的连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：57[text/plain]
正在保存至:“robots.txt”
100%[==========================================================================================>]57 --.-K/s 用时 0s
2017-06-2815:48:41 (10.6 MB/s) - 已保存 “robots.txt” [57/57])
--2017-06-2815:48:41-- https://dockerbook.com/code/5/sinatra/webapp/bin/
再次使用存在的到dockerbook.com:443 的连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：314[text/html]
正在保存至: “webapp/bin/index.html”
100%[==========================================================================================>]314 --.-K/s 用时 0s
2017-06-2815:48:41 (22.9 MB/s) - 已保存 “webapp/bin/index.html” [314/314])
--2017-06-2815:48:41-- https://dockerbook.com/code/5/sinatra/webapp/lib/
再次使用存在的到dockerbook.com:443 的连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：314[text/html]
正在保存至:“webapp/lib/index.html”
100%[==========================================================================================>]314 --.-K/s 用时 0s
2017-06-2815:48:42 (22.3 MB/s) - 已保存 “webapp/lib/index.html” [314/314])
--2017-06-2815:48:42-- https://dockerbook.com/code/5/sinatra/webapp/Dockerfile
再次使用存在的到dockerbook.com:443 的连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：307[text/plain]
正在保存至:“webapp/Dockerfile”
100%[==========================================================================================>]307 --.-K/s 用时 0s
2017-06-2815:48:42 (33.4 MB/s) - 已保存 “webapp/Dockerfile” [307/307])
--2017-06-2815:48:42-- https://dockerbook.com/code/5/sinatra/webapp/bin/webapp
再次使用存在的到dockerbook.com:443 的连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：119[text/plain]
正在保存至:“webapp/bin/webapp”
100%[==========================================================================================>]119 --.-K/s 用时 0s
2017-06-2815:48:42 (21.3 MB/s) - 已保存 “webapp/bin/webapp” [119/119])
--2017-06-2815:48:42-- https://dockerbook.com/code/5/sinatra/webapp/lib/app.rb
再次使用存在的到dockerbook.com:443 的连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：224[text/plain]
正在保存至:“webapp/lib/app.rb”
100%[==========================================================================================>]224 --.-K/s 用时 0s
2017-06-2815:48:42 (21.9 MB/s) - 已保存 “webapp/lib/app.rb” [224/224])
FINISHED--2017-06-28 15:48:42--
Total wall clocktime: 6.4s
Downloaded: 7files, 1.8K in 0s (21.8 MB/s)
[root@dockerWEBrickDocker]# ls
Dockerfile robots.txt webapp
[root@dockerWEBrickDocker]#
[root@dockerWEBrickDocker]# chmod +x ./webapp/bin/webapp
[root@dockerWEBrickDocker]# docker run -d -p 4567 --name webapp -v $PWD/webapp:/opt/webappubuntu/sinatra:1
94e7bb109ea2a8630ebf4e5ce3c26a16b4256caacd370522d72eb7098ac7f87a
[root@dockerWEBrickDocker]# docker logs webapp
[2017-06-28 07:50:31]INFO WEBrick 1.3.1
[2017-06-2807:50:31] INFO ruby 2.3.1 (2016-04-26)[x86_64-linux-gnu]
== Sinatra(v2.0.0) has taken the stage on 4567 for development with backup from WEBrick
[2017-06-2807:50:31] INFO WEBrick::HTTPServer#start: pid=1 port=4567
[root@dockerWEBrickDocker]# docker logs -f webapp
[2017-06-2807:50:31] INFO WEBrick 1.3.1
[2017-06-2807:50:31] INFO ruby 2.3.1 (2016-04-26)[x86_64-linux-gnu]
== Sinatra(v2.0.0) has taken the stage on 4567 for development with backup from WEBrick
[2017-06-2807:50:31] INFO WEBrick::HTTPServer#start: pid=1 port=4567
^C
[root@dockerWEBrickDocker]# docker top webapp
UID PID PPID C STIME TTY TIME CMD
root 58751 58735 0 15:50 ? 00:00:00 /usr/bin/ruby/opt/webapp/bin/webapp
[root@dockerWEBrickDocker]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
94e7bb109ea2 ubuntu/sinatra:1 "/opt/webapp/bin/w..." About a minute ago Up About a minute 0.0.0.0:32768->4567/tcp webapp
9e1a39356c04 unbuntu/nginx:1 "nginx" 4 hours ago Up 4 hours 0.0.0.0:8777->80/tcp nginx1
f9d66082594d registry "/entrypoint.sh/e..." 24 hours ago Up 24 hours 0.0.0.0:5000->5000/tcp reg
67346d341ef0 test/test:1 "/usr/sbin/apache2..." 25 hours ago Up 25 hours 0.0.0.0:9977->80/tcp test1
[root@dockerWEBrickDocker]# docker port webapp 4567
0.0.0.0:32768
[root@dockerWEBrickDocker]#
[root@dockerWEBrickDocker]# curl -i -H 'Accept: application/json' -d'name=Foo&status=Bar' http://localhost\
> :32768/json
HTTP/1.1 200 OK
Content-Type:text/html;charset=utf-8
Content-Length: 29
X-Xss-Protection:1; mode=block
X-Content-Type-Options:nosniff
X-Frame-Options:SAMEORIGIN
Server:WEBrick/1.3.1 (Ruby/2.3.1/2016-04-26)
Date: Wed, 28 Jun2017 08:02:07 GMT
Connection:Keep-Alive
[root@dockerWEBrickDocker]# ls
Dockerfile robots.txt webapp
[root@dockerWEBrickDocker]# cp Dockerfile Dockerfilewebapp
构建Redis服务器
[root@dockerWEBrickDocker]# vim Dockerfile
FROM ubuntu
MAINTAINER wyfTurnbull huisebug@outlook.com
ENV REFRSHED_AT2017-06-28
RUN apt-get update
RUN apt-get -yinstall redis-server redis-tools
EXPOSE 6379
ENTRYPOINT ["/usr/bin/redis-server" ]
CMD []
[root@dockerWEBrickDocker]# docker build -t "ubuntu/redis:1" .
Sending buildcontext to Docker daemon 12.29kB
Step 1/8 : FROMubuntu
---> d355ed3537e9
Step 2/8 :MAINTAINER wyf Turnbull huisebug@outlook.com
---> Using cache
---> e9c604014f9e
Step 3/8 : ENVREFRSHED_AT 2017-06-28
---> Using cache
---> a1ffe5d0754e
Step 4/8 : RUNapt-get update
---> Using cache
---> e58a758ae2b4
Step 5/8 : RUNapt-get -y install redis-server redis-tools
---> Running in 8ac0a93f0a78
Reading packagelists...
Buildingdependency tree...
Reading stateinformation...
The followingadditional packages will be installed:
libjemalloc1
Suggestedpackages:
ruby-redis
The following NEWpackages will be installed:
libjemalloc1 redis-server redis-tools
0 upgraded, 3newly installed, 0 to remove and 8 not upgraded.
Need to get 517 kBof archives.
After thisoperation, 1505 kB of additional disk space will be used.
Get:1http://archive.ubuntu.com/ubuntu xenial/universe amd64 libjemalloc1 amd64 3.6.0-9ubuntu1[78.9 kB]
Get:2http://archive.ubuntu.com/ubuntu xenial/universe amd64 redis-tools amd642:3.0.6-1 [95.3 kB]
Get:3http://archive.ubuntu.com/ubuntu xenial/universe amd64 redis-server amd642:3.0.6-1 [343 kB]
debconf: delayingpackage configuration, since apt-utils is not installed
Fetched 517 kB in1min 47s (4804 B/s)
Selectingpreviously unselected package libjemalloc1.
(Reading database... 4764 files and directories currently installed.)
Preparing tounpack .../libjemalloc1_3.6.0-9ubuntu1_amd64.deb ...
Unpackinglibjemalloc1 (3.6.0-9ubuntu1) ...
Selectingpreviously unselected package redis-tools.
Preparing tounpack .../redis-tools_2%3a3.0.6-1_amd64.deb ...
Unpackingredis-tools (2:3.0.6-1) ...
Selectingpreviously unselected package redis-server.
Preparing tounpack .../redis-server_2%3a3.0.6-1_amd64.deb ...
Unpackingredis-server (2:3.0.6-1) ...
Processingtriggers for libc-bin (2.23-0ubuntu9) ...
Processingtriggers for systemd (229-4ubuntu17) ...
Setting uplibjemalloc1 (3.6.0-9ubuntu1) ...
Setting upredis-tools (2:3.0.6-1) ...
Setting upredis-server (2:3.0.6-1) ...
invoke-rc.d: couldnot determine current runlevel
invoke-rc.d:policy-rc.d denied execution of start.
Processingtriggers for libc-bin (2.23-0ubuntu9) ...
Processingtriggers for systemd (229-4ubuntu17) ...
---> 03255407f165
Removingintermediate container 8ac0a93f0a78
Step 6/8 : EXPOSE6379
---> Running in 22affc02406e
---> 7df7ea0b1eea
Removingintermediate container 22affc02406e
Step 7/8 :ENTRYPOINT /usr/bin/redis-server
---> Running in 3b0adf0c5f07
---> 97b2948892ed
Removingintermediate container 3b0adf0c5f07
Step 8/8 : CMD
---> Running in ac3178a5bbf2
---> 1b4ec4a60516
Removingintermediate container ac3178a5bbf2
Successfully built1b4ec4a60516
Successfullytagged ubuntu/redis:1
[root@dockerWEBrickDocker]#
[root@dockerWEBrickDocker]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu/redis 1 1b4ec4a60516 40 minutes ago 160MB
ubuntu/sinatra 1 4d46ed419d3d 2 hours ago 386MB
unbuntu/nginx 1 d39894d30c41 6 hours ago 214MB
运行一个容器
docker run -d -p6379 --name redis1 ubuntu/redis:1
[root@docker ~]#docker port redis1
6379/tcp ->0.0.0.0:32769
切换到Ubuntu系统，centos安装redis-tools比较麻烦，测试效果
huisebug@client:~$sudo apt-get -y install redis-tools
huisebug@client:~$
huisebug@client:~$redis-cli -h 192.168.100.60 -p 32769
192.168.100.60:32769>
Docker中网卡信息
Docker0：docker所有容器的网关地址
[root@docker ~]#ip a show docker0
5: docker0:<BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 02:42:ad:31:9b:d8 brdff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:adff:fe31:9bd8/64 scope link
valid_lft forever preferred_lft forever
docker中容器新建的网卡veth开头的网卡
[root@docker ~]#ip a
1: lo:<LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33:<BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen1000
link/ether 00:0c:29:d8:b9:40 brdff:ff:ff:ff:ff:ff
inet 192.168.100.60/24 brd 192.168.100.255scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::5bdd:8f38:a7fc:ff74/64 scopelink
valid_lft forever preferred_lft forever
3: virbr0:<NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWNqlen 1000
link/ether 52:54:00:ce:7e:7d brdff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic:<BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWNqlen 1000
link/ether 52:54:00:ce:7e:7d brdff:ff:ff:ff:ff:ff
5: docker0:<BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 02:42:ad:31:9b:d8 brdff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:adff:fe31:9bd8/64 scope link
valid_lft forever preferred_lft forever
61:veth94ac648@if60: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdiscnoqueue master docker0 state UP
link/ether e6:bc:dd:c8:d2:f6 brdff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::e4bc:ddff:fec8:d2f6/64 scopelink
valid_lft forever preferred_lft forever
65:vethfaff039@if64: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdiscnoqueue master docker0 state UP
link/ether 0e:14:2e:d0:9d:bb brdff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::c14:2eff:fed0:9dbb/64 scopelink
valid_lft forever preferred_lft forever
77:vethc99ae6d@if76: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdiscnoqueue master docker0 state UP
link/ether e6:e0:5c:84:6a:13 brd ff:ff:ff:ff:ff:ff link-netnsid 2
inet6 fe80::e4e0:5cff:fe84:6a13/64 scopelink
valid_lft forever preferred_lft forever
87:veth23033e9@if86: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdiscnoqueue master docker0 state UP
link/ether 0a:46:9a:4c:af:51 brdff:ff:ff:ff:ff:ff link-netnsid 3
inet6 fe80::846:9aff:fe4c:af51/64 scopelink
valid_lft forever preferred_lft forever
95:vethdb86bd5@if94: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueuemaster docker0 state UP
link/ether c2:ff:12:93:f0:9b brdff:ff:ff:ff:ff:ff link-netnsid 4
inet6 fe80::c0ff:12ff:fe93:f09b/64 scopelink
valid_lft forever preferred_lft forever
[root@docker ~]#
使用link功能实现容器互联
新建一个没有开放端口的redis服务器
[root@docker ~]#docker run -d --name redis2 ubuntu/redis:1
a817a181b937f2231d9b0b86514644611c98ae16a1cb072eb7ab3ad9e3c0f56d
[root@docker ~]#docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a817a181b937 ubuntu/redis:1 "/usr/bin/redis-se..." 2 minutes ago Up 2 minutes 6379/tcp redis2
688249a9e083 ubuntu/redis:1 "/usr/bin/redis-se..." 5 hours ago Up 6 minutes 0.0.0.0:32771->6379/tcp redis1
717d73d8018e a1ffe5d0754e "/bin/sh -c 'apt-g..." 22 hours ago Exited (100) 22 hours ago lucid_stallman
91ae0c650ce9 a1ffe5d0754e "/bin/sh -c 'apt-g..." 22 hours ago Exited (100) 22 hours ago romantic_blackwell
94e7bb109ea2 ubuntu/sinatra:1 "/opt/webapp/bin/w..." 23 hours ago Up 23 hours 0.0.0.0:32768->4567/tcp webapp
9e1a39356c04 unbuntu/nginx:1 "nginx" 27 hours ago Up 27 hours 0.0.0.0:8777->80/tcp nginx1
f9d66082594d registry "/entrypoint.sh/e..." 47 hours ago Up 46 hours 0.0.0.0:5000->5000/tcp reg
67346d341ef0 test/test:1 "/usr/sbin/apache2..." 2 days ago Up 2 days 0.0.0.0:9977->80/tcp test1
新建一个应用程序容器并关联redis服务器
进入存在webapp这个文件的路径
[root@docker ~]# cd WEBrickDocker/
[root@docker WEBrickDocker]# ls
Dockerfile Dockerfilewebapp robots.txt webapp
[root@dockerWEBrickDocker]# docker run -p 4567 --name webapp2 --link redis2:db -t -i -v$PWD/webapp:/opt/webapp ubuntu/sinatra:1 /bin/bash
root@2db78cce3a9a:/#
redis2服务器并没有将端口开放出来
[root@docker ~]#docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2db78cce3a9a ubuntu/sinatra:1 "/bin/bash" 6 minutes ago Up 6 minutes 0.0.0.0:32772->4567/tcp webapp2
a817a181b937 ubuntu/redis:1 "/usr/bin/redis-se..." 12 minutes ago Up 12 minutes 6379/tcp redis2
688249a9e083 ubuntu/redis:1 "/usr/bin/redis-se..." 5 hours ago Up 17 minutes 0.0.0.0:32771->6379/tcp redis1
在容器中可以查看连接信息
可以看见redis服务器的IP地址，连接后的别名 容器ID 容器名
root@2db78cce3a9a:/#cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.7 db a817a181b937 redis2
172.17.0.8 2db78cce3a9a
使用ping来测试
root@2db78cce3a9a:/#apt-get install inetutils-ping
Reading packagelists... Done
Buildingdependency tree
Reading stateinformation... Done
The following NEWpackages will be installed:
inetutils-ping
0 upgraded, 1newly installed, 0 to remove and 8 not upgraded.
Need to get 56.9kB of archives.
After thisoperation, 338 kB of additional disk space will be used.
Get:1http://archive.ubuntu.com/ubuntu xenial/universe amd64 inetutils-ping amd642:1.9.4-1build1 [56.9 kB]
Fetched 56.9 kB in6s (8289 B/s)
debconf: delayingpackage configuration, since apt-utils is not installed
Selectingpreviously unselected package inetutils-ping.
(Reading database... 13996 files and directories currently installed.)
Preparing tounpack .../inetutils-ping_2%3a1.9.4-1build1_amd64.deb ...
Unpackinginetutils-ping (2:1.9.4-1build1) ...
Setting upinetutils-ping (2:1.9.4-1build1) ...
root@2db78cce3a9a:/#ping db
PING db(172.17.0.7): 56 data bytes
64 bytes from172.17.0.7: icmp_seq=0 ttl=64 time=0.146 ms
64 bytes from172.17.0.7: icmp_seq=1 ttl=64 time=0.131 ms
64 bytes from172.17.0.7: icmp_seq=2 ttl=64 time=0.093 ms
^C--- db pingstatistics ---
3 packetstransmitted, 3 packets received, 0% packet loss
round-tripmin/avg/max/stddev = 0.093/0.123/0.146/0.000 ms
env查看变量
后台运行webapp程序
还要修改，无法生效
root@2db78cce3a9a:~#vim /opt/webapp/lib/app.rb
require"rubygems"
require"sinatra"
require"json"
require"uri"
classApp < Sinatra::Application
set :bind, '0.0.0.0'
get '/' do
"<h1>DockerBook Test Sinatraapp</h1>"
end
post '/json/?' do
params.to_json
end
end
uri=URI.parse(ENV['DB_PORT'])
redis =Redis.new(:host =>uri.host, :port => uri.port)
~
root@2db78cce3a9a:~#
root@2db78cce3a9a:~#nohup /opt/webapp/bin/webapp &
[1] 68
root@2db78cce3a9a:~#nohup: ignoring input and appending output to 'nohup.out'
^C
root@2db78cce3a9a:~#
Docker结合Jenkins
[root@docker ~]# mkdir JenkinsDocker
[root@docker ~]#cd JenkinsDocker/
（yi）也是可以从官方搜索镜像
[root@dockerJenkinsDocker]# docker search jenkins
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
jenkins Official JenkinsDocker image 2925 [OK]
stephenreed/jenkins-java8-maven-git Automated build that provides acontinuous... 64 [OK]
killercentury/jenkins-dind Generic Jenkins CI with DockerEngine and ... 26 [OK]
aespinosa/jenkins Sets up a container withjenkins installed... 22 [OK]
cloudbees/jenkins-enterprise CloudBees Jenkins Enterprise (Rollingrele... 22 [OK]
appcontainers/jenkins Centos/Debian/Ubuntu BasedCustomizable Je... 9 [OK]
blacklabelops/jenkins Docker Jenkins Swarm-Readywith HTTPS and ... 9 [OK]
killercentury/jenkins-slave-dind Generic Jenkins Slave with Docker Enginea... 8 [OK]
fabric8/jenkins-docker Fabric8 Jenkins DockerImage 7 [OK]
tianon/jenkins-slave SSHd, Java, andDocker-in-Docker specifica... 7 [OK]
bitnami/jenkins Bitnami Docker Image forJenkins 6 [OK]
publicisworldwide/jenkins-slave Jenkins Slave based on Oracle Linux 4 [OK]
blacklabelops/jenkins-swarm Jenkins Swarm Slave Dockerized andParamet... 4 [OK]
eeacms/jenkins-slave Jenkins slave ready to runDocker image (J... 3 [OK]
mrbobbytables/jenkins Jenkins CI container withMesos integration 1 [OK]
baselibrary/jenkins ThoughtWorks Docker Image:jenkins 1 [OK]
marcelhuberfoo/jenkins jenkins build server dockerimage 1 [OK]
foxylion/jenkins Jenkins 2 with automatedsetup to support ... 1 [OK]
enieuw/jenkins Jenkins 1 [OK]
openfrontier/jenkins The official Jenkins dockerplus some plug... 0 [OK]
unox/jenkins Jenkins, with thejenkins user added to th... 0 [OK]
mmerrick/jenkins Added dependencies to Jenkins 0 [OK]
garethjevans/jenkins Jenkins docker image withadditional plugins 0 [OK]
dockersolutions/jenkins Jenkins image used for SE demos 0 [OK]
virtuasphere/jenkins jenkins 0 [OK]
（er）编写构建
解决问题：
#下面的wget是我后来更改的，起初用的是curl，总是无法下载gpg这个文件下来，还要研究解决，curl -o gpg这个有时候可以下载下来
#起初使用的apt-get openjdk-6-jdk，因为从网上拉取的jenkins是最新版，所以要更新支持java最新，用java6无法运行，apt-get openjdk-8-jdk也没有这个包，所以修改为使用压缩包形式安装java，注意ADD命令是不会重命名的
所需包和Dockerfile内容
[root@dockerJenkinsDocker]# ls
Dockerfile dockerjenkins.sh jdk-8u111-linux-x64.tar.gz
[root@dockerJenkinsDocker]# vim Dockerfile
FROM ubuntu:14.04
MAINTAINERhuisebug@outlook.com
ENV REFRESHED_AT2017-06-30
ADD./jdk-8u111-linux-x64.tar.gz /usr/local/
RUN mv/usr/local/jdk1.8.0_111 /usr/local/java
ENVJAVA_HOME=/usr/local/java
ENV PATH=$PATH:$JAVA_HOME/bin
RUN bash
RUN sed -is@/archive.ubuntu.com/@/mirrors.163.com/@g /etc/apt/sources.list
RUN apt-get clean
RUN apt-get update-qq
RUN apt-get -yinstall wget
RUN wgethttps://get.docker.io/gpg
RUN apt-key addgpg
RUN apt-getinstall -y apt-transport-https
RUN echo debhttps://get.docker.io/ubuntu docker main >/etc/apt/sources.list.d/docker.list
RUN apt-get update
RUN apt-getinstall -y iptables ca-certificates lxc git-core lxc-docker curl
ENV JENKINS_HOME/opt/jenkins/date
ENV JENKINS_MIRRORhttp://mirrors.jenkins-ci.org
RUN mkdir -p$JENKINS_HOME/plugins
RUN curl -sf -o/opt/jenkins/jenkins.war -L $JENKINS_MIRROR/war-stable/latest/jenkins.war
RUN for plugin inchucknorris greenballs scm-api git-client git ws-cleanup ;\
do curl -sf -o$JENKINS_HOME/plugins/${plugin}.hpi \
-L$JENKINS_MIRROR/plugins/${plugin}/latest/${plugin}.hpi ;\
done
ADD./dockerjenkins.sh /usr/local/bin/dockerjenkins.sh
RUN chmod +x/usr/local/bin/dockerjenkins.sh
VOLUME/var/lib/docker
EXPOSE 8080
ENTRYPOINT["/usr/local/bin/dockerjenkins.sh"]
首先，他设置了Ubuntu环境，加入了需要的Docker APT仓库，并加入了对应的GPG key。之后更新了包列表，并安装了Docker和Jenkins所需的包，加入了一些Jenkins需要的包
创建了/opt/jenkins目录，并把最新稳定版本的Jenkins下载都这个目录。还需要一些Jenkins插件，给Jenkins提供额外的功能
使用ENV指令吧JENKINS_HOME和JENKINS_MIRROR环境变量设置为Jenkins的数据目录和镜像站点
指定了VOLUME 指令，VOLUME指令从容器运行的宿主机上挂载一个卷，在这里，为了“骗过”Docker，指定/var/lib/docker作为卷，这是因为/var/lib/docker 目录是Docker用来存贮其容器的目录。这个位置必须是真实的文件系统，而不能是像Docker镜像层那种挂载点。
使用VOLUME 指令该诉Docker进程，在容器运行内部使用宿主机的文件系统，而不能是像Docker镜像层那种挂载点。
那么，我们使用VOLUME指令告诉Docker进程，在容器运行内部使用宿主机的文件系统作为容器的存储，这样，容器内嵌Docker的/var/lib/docker目录将保存在宿主机系统的/var/lib/docker/volumes目录下的某个位置
公开jenkins的8080端口
#先把启动脚本下载下来
[root@dockerJenkinsDocker]# wget https://dockerbook.com/code/5/jenkins/dockerjenkins.sh
构建
[root@dockerJenkinsDocker]# docker build -t "ubuntu/jenkins:1" .
创建容器
[root@dockerJenkinsDocker]# docker run -p 8080:8080 -d --name "jenkins"--privileged ubuntu/jenkins:1
79e645e40f228708b03b9d3f45d5af15243902edc3025d1098e61a135a4c7b75
[root@dockerJenkinsDocker]#
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