本篇文章给大家谈谈docker系列-Java程序制作DockerImage推荐方案(转载)，以及java实现docker的知识点，同时本文还将给你拓展167dockerdocker构建nginx容器系
本篇文章给大家谈谈docker 系列 - Java程序制作Docker Image推荐方案(转载)，以及java实现docker的知识点，同时本文还将给你拓展167 docker docker构建nginx容器系列问题 docker registry docker run docker toolbo、25.week4 docker build 也就是创建自己的image 上传image到dockerhub 从dockerhub下载images、Docker - docker images存储位置、Docker - 删除 untagged docker images等相关知识，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：- docker 系列 - Java程序制作Docker Image推荐方案(转载)（java实现docker）
- 167 docker docker构建nginx容器系列问题 docker registry docker run docker toolbo
- 25.week4 docker build 也就是创建自己的image 上传image到dockerhub 从dockerhub下载images
- Docker - docker images存储位置
- Docker - 删除 untagged docker images
docker 系列 - Java程序制作Docker Image推荐方案(转载)（java实现docker）
本文转自 https://segmentfault.com/a/1190000016449865 , 感谢作者!
本文的源代码在：https://github.com/chanjarste...
这里先给出一些Docker Image制作的要求，之后我们再看怎么做。
- 制作过程要融合在项目构建过程中
- 使用官方Image作为基础Image
- 设定正确的时区
- Container内的程序以非root用户启动
- 指定Web程序的接口
- 能够传递JVM参数、Java System Properties、程序自定义的参数
下面具体讲一下具体怎么做到以上几点：
制作过程要融合在项目构建过程中
这里推荐使用Spotify的dockerfile-maven-plugin，理由是这个plugin用起来最简单且容易掌握。
该plugin的本质上是你写一个Dockerfile（关于Dockerfile的具体写法请参照官方文档），这个plugin把一些参数传递进去来帮助你构建Docker Image。
因此只要你会写Dockerfile，就会使用这个plugin，它没有加入任何额外的概念。
使用官方Image作为基础Image
Java的基础镜像应该在openjdk repository里寻找，而不是在已经过时的java repository里找。
openjdk repository提供了各种各样的image tags看起来眼花缭乱，但是本质上来说就这么几个：
- openjdk:<version>
- openjdk:<version>-slim
- openjdk:<version>-alpine
关于<version>一般来说指定大版本号就行了，比如你可以在Dockerfile这样写：
FROM openjdk:8-alpine从尺寸上来讲，alpine最小、slim稍大、默认的最大。所以应该尽可能的使用alpine版本的，如果发现程序的运行环境缺少某些东西，那么尝试用slim版本或者默认版本。就目前的经验来讲：
- 如果需要操作系统字体库，那么就得使用slim版本或者默认版本。需要操作系统字体库的程序例如：图片验证码、PDF导出。
- 如果需要某些Linux标准的动态/静态连接库，那么在alpine版本不行的情况下，尝试slim版本或默认版本。因为alpine版本是一个及其精简的Linux，它删除了很多东西。
设定正确的时区
几乎所有的Docker Image的时区都是UTC，我们需要给我们自己制作的Docker Image设定时区（参考的是SO的这个回答）：
ENV TZ=Asia/Shanghai
RUN set -eux; \
ln -snf /usr/share/zoneinfo/$TZ /etc/localtime; \
echo $TZ > /etc/timezone关于数据库时区的相关内容可以见：
- 数据库时区那些事儿 - MySQL的时区处理
- 数据库时区那些事儿 - Oracle的时区处理
Container内的程序以非root用户启动
在Docker Image内部，我们应该使用非root用户启动程序，这需要使用到gosu。
gosu的Dockerfile指南在这里。
记得要根据不同的基础Image选择适合的安装方式。
如果你用的是openjdk:<version>-alpine，那么直接用本项目提供的Dockerfile就行了。
如果你用的是openjdk:<version>-slim或者openjdk:<version>，那么在Image里安装gosu的方式是这样：
RUN set -ex; \
apt update; \
apt install -y gosu; \
rm -rf /var/lib/apt/lists/*; \
# verify that the binary works gosu nobody true;指定Web程序的接口
对于联网应用而言，必须在Dockerfile中指定暴露的端口，否则该端口无法映射。
EXPOSE 8080能够传递JVM参数、Java System Properties、程序自定义的参数
我们需要能够在启动Docker Image的时候将一些参数传递进去：
- JVM参数
- Java System Properties
- 程序启动参数
这里就需要参考Dockerfile best practice和Docker ENTRYPOINT了。
样例项目
样例项目源代码在这里：https://github.com/chanjarster/dockerfile-examples/
目录结构
所有与程序相关的东西都存放在/home/java-app/下：
/home/java-app
├── docker-entrypoint.sh
├── lib
│ └── java-app.jar
├── etc
├── logs
└── tmpdocker-entrypoint.sh，启动脚本lib，存放JAR包lib/java-app.jar，程序JAR包etc，存放配置文件logs，存放日志文件tmp，存放临时文件
构建Image的方法
mvn clean package dockerfile:build运行
普通启动，然后访问http://localhost:8080：
docker run -p 8080:8080 chanjarster/dockerfile-java-examples-1:1.0-SNAPSHOT设定JVM参数，使用JVM_OPTS环境变量：
docker run -p 8080:8080 -e JVM_OPTS=''-Xmx128M -Xms128M'' chanjarster/dockerfile-java-examples-1:1.0-SNAPSHOT设定System Properties，使用JAVA_ARGS环境变量：
docker run -p 8080:8080 -e JAVA_ARGS=''-Dabc=xyz -Ddef=uvw'' chanjarster/dockerfile-java-examples-1:1.0-SNAPSHOT提供程序运行参数，在后面直接添加即可：
docker run -p 8080:8080 chanjarster/dockerfile-java-examples-1:1.0-SNAPSHOT --debug参考文档
- Dockerfile best practice
- Docker ENTRYPOINT
- Postgres Dockerfile & script
- MySQL Dockerfile & script
- gosu Intall
- Bash set命令教程
167 docker docker构建nginx容器系列问题 docker registry docker run docker toolbo
background : 最近为小伙伴们筹划docker系列的技术分享，研究了一会docker相关技术， 在此记录一下构建nginx容器时候的坑
1.nginx服务器根目录问题
docker 官方镜像提供的nginx基于debian/jessie平台，其文件结构和ubuntu中的nginx中并不相同
eg:
run一个niginx容器
<span>//80端口被占用，so...</span> $ sudo docker run <span>-it</span><span>-p</span><span>800</span>:<span>800</span> nginx $ sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES <span>1801</span>a32aab54 nginx <span>"nginx -g ''daemon off"</span><span>2</span> minutes ago Up <span>2</span> minutes <span>80</span>/tcp, <span>443</span>/tcp, <span>0.0</span><span>.0</span><span>.0</span>:<span>800</span><span>-></span><span>800</span>/tcp berserk_kare
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进入容器内部
<span>$ </span>sudo docker exec -it <span>1801</span>a32aab54 /bin/bash root<span>@1801a32aab54</span><span>:/</span><span># </span>
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查看nginx目录
<span># cd /etc/nginx/</span> conf<span>.d</span>/ koi-utf mime<span>.types</span> nginx<span>.conf</span> uwsgi_params fastcgi_params koi-win modules/ scgi_params win-utf
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可以看到不仅没有熟悉的 /sites-available，也没有 /sites-enabled
继续查看nginx配置
<span># cat /conf.d/default.conf</span><span>server</span> {
listen <span>80</span>;
server_name localhost;
<span>#charset koi8-r;</span><span>#access_log /var/log/nginx/log/host.access.log main;</span> location / {
root /usr/share/nginx/html;
<span>index</span><span>index</span>.html <span>index</span>.htm;
}
<span>#error_page 404 /404.html;</span><span># redirect server error pages to the static page /50x.html</span><span>#</span>
error_page <span>500</span><span>502</span><span>503</span><span>504</span> /<span>50</span>x.html;
location = /<span>50</span>x.html {
root /usr/share/nginx/html;
}
<span>#...省略php-fpm配置，好长..</span>
}登录后复制
根目录配置: root /usr/share/nginx/html;
测试
<span># cd /usr/share/nginx/html</span><span># touch index.html</span><span># echo "test nginx in docker" >index.html</span>
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php-fpm配置相关
'').addClass(''pre-numbering'').hide(); $(this).addClass(''has-numbering'').parent().append($numbering); for (i = 1; i '').text(i)); }; $numbering.fadeIn(1700); }); });以上就介绍了167 docker docker构建nginx容器系列问题，包括了docker,nginx方面的内容，希望对PHP教程有兴趣的朋友有所帮助。
25.week4 docker build 也就是创建自己的image 上传image到dockerhub 从dockerhub下载images
dado可以写你自己的名字
这个命令就会根据目录下的Dockerfile（固定用和这个名字）文件里面的内容 去下载并创建运行命令一步一步地
Setting up libxfixes3:amd64 (1:5.0.1-2) ...
Setting up libxinerama1:amd64 (2:1.1.3-1) ...
Setting up libxshmfence1:amd64 (1.2-1) ...
Setting up libxtst6:amd64 (2:1.2.2-1) ...
Setting up libxxf86vm1:amd64 (1:1.1.4-1) ...
Setting up libjbig0:amd64 (2.1-3.1) ...
Setting up libtxc-dxtn-s2tc0:amd64 (0~git20131104-1.1) ...
update-alternatives: using /usr/lib/x86_64-linux-gnu/libtxc_dxtn_s2tc.so.0 to provide /usr/lib/x86_64-linux-gnu/libtxc_dxtn.so (libtxc-dxtn-x86_64-linux-gnu) in auto mode
Setting up libbsd0:amd64 (0.8.2-1) ...
Setting up libnettle6:amd64 (3.2-1ubuntu0.16.04.1) ...
Setting up libhogweed4:amd64 (3.2-1ubuntu0.16.04.1) ...
Setting up libidn11:amd64 (1.32-3ubuntu1.2) ...
Setting up libp11-kit0:amd64 (0.23.2-5~ubuntu16.04.1) ...
Setting up libtasn1-6:amd64 (4.7-3ubuntu0.16.04.3) ...
Setting up libgnutls30:amd64 (3.4.10-4ubuntu1.4) ...
Setting up libsqlite3-0:amd64 (3.11.0-1ubuntu1) ...
Setting up libssl1.0.0:amd64 (1.0.2g-1ubuntu4.13) ...
debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set, so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (Can''t locate Term/ReadLine.pm in @INC (you may need to install the Term::ReadLine module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.22.1 /usr/local/share/perl/5.22.1 /usr/lib/x86_64-linux-gnu/perl5/5.22 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.22 /usr/share/perl/5.22 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base .) at /usr/share/perl5/Debconf/FrontEnd/Readline.pm line 7.)
debconf: falling back to frontend: Teletype
Setting up openssl (1.0.2g-1ubuntu4.13) ...
Setting up ca-certificates (20170717~16.04.1) ...
debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set, so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (Can''t locate Term/ReadLine.pm in @INC (you may need to install the Term::ReadLine module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.22.1 /usr/local/share/perl/5.22.1 /usr/lib/x86_64-linux-gnu/perl5/5.22 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.22 /usr/share/perl/5.22 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base .) at /usr/share/perl5/Debconf/FrontEnd/Readline.pm line 7.)
debconf: falling back to frontend: Teletype
Setting up libcap-ng0:amd64 (0.7.7-1) ...
Setting up libdbus-1-3:amd64 (1.10.6-1ubuntu3.3) ...
Setting up dbus (1.10.6-1ubuntu3.3) ...
Setting up krb5-locales (1.13.2+dfsg-5ubuntu2) ...
Setting up libdrm-common (2.4.91-2~16.04.1) ...
Setting up libdrm2:amd64 (2.4.91-2~16.04.1) ...
Setting up libedit2:amd64 (3.1-20150325-1ubuntu2) ...
Setting up libelf1:amd64 (0.165-3ubuntu1.1) ...
Setting up libglib2.0-data (2.48.2-0ubuntu4) ...
Setting up libkrb5support0:amd64 (1.13.2+dfsg-5ubuntu2) ...
Setting up libk5crypto3:amd64 (1.13.2+dfsg-5ubuntu2) ...
Setting up libkeyutils1:amd64 (1.5.9-8ubuntu1) ...
Setting up libkrb5-3:amd64 (1.13.2+dfsg-5ubuntu2) ...
Setting up libgssapi-krb5-2:amd64 (1.13.2+dfsg-5ubuntu2) ...
Setting up libicu55:amd64 (55.1-7ubuntu0.4) ...
Setting up libxml2:amd64 (2.9.3+dfsg1-1ubuntu0.6) ...
Setting up shared-mime-info (1.5-2ubuntu0.2) ...
Setting up xdg-user-dirs (0.15-2ubuntu6.16.04.1) ...
Setting up xml-core (0.13+nmu2) ...
Setting up java-common (0.56ubuntu2) ...
Setting up libavahi-common-data:amd64 (0.6.32~rc+dfsg-1ubuntu2.2) ...
Setting up libavahi-common3:amd64 (0.6.32~rc+dfsg-1ubuntu2.2) ...
Setting up libavahi-client3:amd64 (0.6.32~rc+dfsg-1ubuntu2.2) ...
Setting up libcups2:amd64 (2.1.3-4ubuntu0.5) ...
Setting up libjpeg8:amd64 (8c-2ubuntu8) ...
Setting up libnspr4:amd64 (2:4.13.1-0ubuntu0.16.04.1) ...
Setting up libpcsclite1:amd64 (1.8.14-1ubuntu1.16.04.1) ...
Setting up libxi6:amd64 (2:1.7.6-1) ...
Setting up libxrender1:amd64 (1:0.9.9-0ubuntu1) ...
Setting up fonts-dejavu-extra (2.35-1) ...
Setting up hicolor-icon-theme (0.15-0ubuntu1.1) ...
Setting up libasound2-data (1.1.0-0ubuntu1) ...
Setting up libasound2:amd64 (1.1.0-0ubuntu1) ...
Setting up libatk1.0-data (2.18.0-1) ...
Setting up libatk1.0-0:amd64 (2.18.0-1) ...
Setting up libpixman-1-0:amd64 (0.33.6-1) ...
Setting up libxcb-render0:amd64 (1.11.1-1ubuntu1) ...
Setting up libxcb-shm0:amd64 (1.11.1-1ubuntu1) ...
Setting up libcairo2:amd64 (1.14.6-1) ...
Setting up libdatrie1:amd64 (0.2.10-2) ...
Setting up libdrm-amdgpu1:amd64 (2.4.91-2~16.04.1) ...
Setting up libpciaccess0:amd64 (0.13.4-1) ...
Setting up libdrm-intel1:amd64 (2.4.91-2~16.04.1) ...
Setting up libdrm-nouveau2:amd64 (2.4.91-2~16.04.1) ...
Setting up libdrm-radeon1:amd64 (2.4.91-2~16.04.1) ...
Setting up libflac8:amd64 (1.3.1-4) ...
Setting up libtiff5:amd64 (4.0.6-1ubuntu0.4) ...
Setting up libgdk-pixbuf2.0-common (2.32.2-1ubuntu1.5) ...
Setting up libgdk-pixbuf2.0-0:amd64 (2.32.2-1ubuntu1.5) ...
Setting up libgif7:amd64 (5.1.4-0.3~16.04) ...
Setting up libglapi-mesa:amd64 (18.0.5-0ubuntu0~16.04.1) ...
Setting up libllvm6.0:amd64 (1:6.0-1ubuntu2~16.04.1) ...
Setting up libsensors4:amd64 (1:3.4.0-2) ...
Setting up libgl1-mesa-dri:amd64 (18.0.5-0ubuntu0~16.04.1) ...
Setting up libx11-xcb1:amd64 (2:1.6.3-1ubuntu2) ...
Setting up libxcb-dri2-0:amd64 (1.11.1-1ubuntu1) ...
Setting up libxcb-dri3-0:amd64 (1.11.1-1ubuntu1) ...
Setting up libxcb-glx0:amd64 (1.11.1-1ubuntu1) ...
Setting up libxcb-present0:amd64 (1.11.1-1ubuntu1) ...
Setting up libxcb-sync1:amd64 (1.11.1-1ubuntu1) ...
Setting up libgl1-mesa-glx:amd64 (18.0.5-0ubuntu0~16.04.1) ...
update-alternatives: using /usr/lib/x86_64-linux-gnu/mesa/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode
Setting up libgraphite2-3:amd64 (1.3.10-0ubuntu0.16.04.1) ...
Setting up libgtk2.0-common (2.24.30-1ubuntu1.16.04.2) ...
Setting up libthai-data (0.1.24-2) ...
Setting up libthai0:amd64 (0.1.24-2) ...
Setting up libpango-1.0-0:amd64 (1.38.1-1) ...
Setting up libharfbuzz0b:amd64 (1.0.1-1ubuntu0.1) ...
Setting up libpangoft2-1.0-0:amd64 (1.38.1-1) ...
Setting up libpangocairo-1.0-0:amd64 (1.38.1-1) ...
Setting up libxcursor1:amd64 (1:1.1.14-1ubuntu0.16.04.2) ...
Setting up libxrandr2:amd64 (2:1.5.0-1) ...
Setting up libgtk2.0-0:amd64 (2.24.30-1ubuntu1.16.04.2) ...
Setting up libgtk2.0-bin (2.24.30-1ubuntu1.16.04.2) ...
Setting up xorg-sgml-doctools (1:1.11-1) ...
Setting up x11proto-core-dev (7.0.31-1~ubuntu16.04.2) ...
Setting up libice-dev:amd64 (2:1.0.9-1) ...
Setting up libpthread-stubs0-dev:amd64 (0.3-4) ...
Setting up libvorbis0a:amd64 (1.3.5-3ubuntu0.2) ...
Setting up libvorbisenc2:amd64 (1.3.5-3ubuntu0.2) ...
Setting up libsndfile1:amd64 (1.0.25-10ubuntu0.16.04.1) ...
Setting up libpulse0:amd64 (1:8.0-0ubuntu3.10) ...
Setting up libsm-dev:amd64 (2:1.2.2-1) ...
Setting up libxau-dev:amd64 (1:1.0.8-1) ...
Setting up libxdmcp-dev:amd64 (1:1.1.2-1.1) ...
Setting up x11proto-input-dev (2.3.1-1) ...
Setting up x11proto-kb-dev (1.0.7-0ubuntu1) ...
Setting up xtrans-dev (1.3.5-1) ...
Setting up libxcb1-dev:amd64 (1.11.1-1ubuntu1) ...
Setting up libx11-dev:amd64 (2:1.6.3-1ubuntu2) ...
Setting up libx11-doc (2:1.6.3-1ubuntu2) ...
Setting up libxt6:amd64 (1:1.1.5-0ubuntu1) ...
Setting up libxt-dev:amd64 (1:1.1.5-0ubuntu1) ...
Setting up tcpd (7.6.q-25) ...
Setting up libnss3-nssdb (2:3.28.4-0ubuntu0.16.04.3) ...
Setting up libnss3:amd64 (2:3.28.4-0ubuntu0.16.04.3) ...
Setting up openjdk-8-jre-headless:amd64 (8u181-b13-0ubuntu0.16.04.1) ...
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/rmid to provide /usr/bin/rmid (rmid) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java to provide /usr/bin/java (java) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/keytool to provide /usr/bin/keytool (keytool) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/jjs to provide /usr/bin/jjs (jjs) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/pack200 to provide /usr/bin/pack200 (pack200) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/rmiregistry to provide /usr/bin/rmiregistry (rmiregistry) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/unpack200 to provide /usr/bin/unpack200 (unpack200) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/orbd to provide /usr/bin/orbd (orbd) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/servertool to provide /usr/bin/servertool (servertool) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/tnameserv to provide /usr/bin/tnameserv (tnameserv) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jexec to provide /usr/bin/jexec (jexec) in auto mode
Setting up ca-certificates-java (20160321ubuntu1) ...
done.
Setting up openjdk-8-jre:amd64 (8u181-b13-0ubuntu0.16.04.1) ...
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/policytool to provide /usr/bin/policytool (policytool) in auto mode
Setting up openjdk-8-jdk-headless:amd64 (8u181-b13-0ubuntu0.16.04.1) ...
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/idlj to provide /usr/bin/idlj (idlj) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jdeps to provide /usr/bin/jdeps (jdeps) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/wsimport to provide /usr/bin/wsimport (wsimport) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/rmic to provide /usr/bin/rmic (rmic) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jinfo to provide /usr/bin/jinfo (jinfo) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jsadebugd to provide /usr/bin/jsadebugd (jsadebugd) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/native2ascii to provide /usr/bin/native2ascii (native2ascii) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jstat to provide /usr/bin/jstat (jstat) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/javac to provide /usr/bin/javac (javac) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/javah to provide /usr/bin/javah (javah) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jps to provide /usr/bin/jps (jps) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jstack to provide /usr/bin/jstack (jstack) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jrunscript to provide /usr/bin/jrunscript (jrunscript) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/javadoc to provide /usr/bin/javadoc (javadoc) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jhat to provide /usr/bin/jhat (jhat) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/javap to provide /usr/bin/javap (javap) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jar to provide /usr/bin/jar (jar) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/extcheck to provide /usr/bin/extcheck (extcheck) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/schemagen to provide /usr/bin/schemagen (schemagen) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/xjc to provide /usr/bin/xjc (xjc) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jmap to provide /usr/bin/jmap (jmap) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jstatd to provide /usr/bin/jstatd (jstatd) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jdb to provide /usr/bin/jdb (jdb) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/serialver to provide /usr/bin/serialver (serialver) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/wsgen to provide /usr/bin/wsgen (wsgen) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jcmd to provide /usr/bin/jcmd (jcmd) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jarsigner to provide /usr/bin/jarsigner (jarsigner) in auto mode
Setting up openjdk-8-jdk:amd64 (8u181-b13-0ubuntu0.16.04.1) ...
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/appletviewer to provide /usr/bin/appletviewer (appletviewer) in auto mode
update-alternatives: using /usr/lib/jvm/java-8-openjdk-amd64/bin/jconsole to provide /usr/bin/jconsole (jconsole) in auto mode
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Processing triggers for systemd (229-4ubuntu21.2) ...
Processing triggers for ca-certificates (20170717~16.04.1) ...
Updating certificates in /etc/ssl/certs...
148 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...
Adding debian:ACCVRAIZ1.pem
Adding debian:ACEDICOM_Root.pem
Adding debian:AC_RAIZ_FNMT-RCM.pem
Adding debian:Actalis_Authentication_Root_CA.pem
Adding debian:AddTrust_External_Root.pem
Adding debian:AddTrust_Low-Value_Services_Root.pem
Adding debian:AddTrust_Public_Services_Root.pem
Adding debian:AddTrust_Qualified_Certificates_Root.pem
Adding debian:AffirmTrust_Commercial.pem
Adding debian:AffirmTrust_Networking.pem
Adding debian:AffirmTrust_Premium.pem
Adding debian:AffirmTrust_Premium_ECC.pem
Adding debian:Amazon_Root_CA_1.pem
Adding debian:Amazon_Root_CA_2.pem
Adding debian:Amazon_Root_CA_3.pem
Adding debian:Amazon_Root_CA_4.pem
Adding debian:Atos_TrustedRoot_2011.pem
Adding debian:Autoridad_de_Certificacion_Firmaprofesional_CIF_A62634068.pem
Adding debian:Baltimore_CyberTrust_Root.pem
Adding debian:Buypass_Class_2_Root_CA.pem
Adding debian:Buypass_Class_3_Root_CA.pem
Adding debian:CA_Disig_Root_R1.pem
Adding debian:CA_Disig_Root_R2.pem
Adding debian:CFCA_EV_ROOT.pem
Adding debian:CNNIC_ROOT.pem
Adding debian:COMODO_Certification_Authority.pem
Adding debian:COMODO_ECC_Certification_Authority.pem
Adding debian:COMODO_RSA_Certification_Authority.pem
Adding debian:Camerfirma_Chambers_of_Commerce_Root.pem
Adding debian:Camerfirma_Global_Chambersign_Root.pem
Adding debian:Certigna.pem
Adding debian:Certinomis_-_Autorité_Racine.pem
Adding debian:Certinomis_-_Root_CA.pem
Adding debian:Certplus_Class_2_Primary_CA.pem
Adding debian:Certplus_Root_CA_G1.pem
Adding debian:Certplus_Root_CA_G2.pem
Adding debian:Certum_Root_CA.pem
Adding debian:Certum_Trusted_Network_CA.pem
Adding debian:Certum_Trusted_Network_CA_2.pem
Adding debian:Chambers_of_Commerce_Root_-_2008.pem
Adding debian:China_Internet_Network_Information_Center_EV_Certificates_Root.pem
Adding debian:Comodo_AAA_Services_root.pem
Adding debian:Comodo_Secure_Services_root.pem
Adding debian:Comodo_Trusted_Services_root.pem
Adding debian:Cybertrust_Global_Root.pem
Adding debian:D-TRUST_Root_Class_3_CA_2_2009.pem
Adding debian:D-TRUST_Root_Class_3_CA_2_EV_2009.pem
Adding debian:DST_ACES_CA_X6.pem
Adding debian:DST_Root_CA_X3.pem
Adding debian:Deutsche_Telekom_Root_CA_2.pem
Adding debian:DigiCert_Assured_ID_Root_CA.pem
Adding debian:DigiCert_Assured_ID_Root_G2.pem
Adding debian:DigiCert_Assured_ID_Root_G3.pem
Adding debian:DigiCert_Global_Root_CA.pem
Adding debian:DigiCert_Global_Root_G2.pem
Adding debian:DigiCert_Global_Root_G3.pem
Adding debian:DigiCert_High_Assurance_EV_Root_CA.pem
Adding debian:DigiCert_Trusted_Root_G4.pem
Adding debian:E-Tugra_Certification_Authority.pem
Adding debian:EC-ACC.pem
Adding debian:EE_Certification_Centre_Root_CA.pem
Adding debian:Entrust.net_Premium_2048_Secure_Server_CA.pem
Adding debian:Entrust_Root_Certification_Authority.pem
Adding debian:Entrust_Root_Certification_Authority_-_EC1.pem
Adding debian:Entrust_Root_Certification_Authority_-_G2.pem
Adding debian:GeoTrust_Global_CA.pem
Adding debian:GeoTrust_Global_CA_2.pem
Adding debian:GeoTrust_Primary_Certification_Authority.pem
Adding debian:GeoTrust_Primary_Certification_Authority_-_G2.pem
Adding debian:GeoTrust_Primary_Certification_Authority_-_G3.pem
Adding debian:GeoTrust_Universal_CA.pem
Adding debian:GeoTrust_Universal_CA_2.pem
Adding debian:GlobalSign_ECC_Root_CA_-_R4.pem
Adding debian:GlobalSign_ECC_Root_CA_-_R5.pem
Adding debian:GlobalSign_Root_CA.pem
Adding debian:GlobalSign_Root_CA_-_R2.pem
Adding debian:GlobalSign_Root_CA_-_R3.pem
Adding debian:Global_Chambersign_Root_-_2008.pem
Adding debian:Go_Daddy_Class_2_CA.pem
Adding debian:Go_Daddy_Root_Certificate_Authority_-_G2.pem
Adding debian:Hellenic_Academic_and_Research_Institutions_ECC_RootCA_2015.pem
Adding debian:Hellenic_Academic_and_Research_Institutions_RootCA_2011.pem
Adding debian:Hellenic_Academic_and_Research_Institutions_RootCA_2015.pem
Adding debian:Hongkong_Post_Root_CA_1.pem
Adding debian:ISRG_Root_X1.pem
Adding debian:IdenTrust_Commercial_Root_CA_1.pem
Adding debian:IdenTrust_Public_Sector_Root_CA_1.pem
Adding debian:Izenpe.com.pem
Adding debian:LuxTrust_Global_Root_2.pem
Adding debian:Microsec_e-Szigno_Root_CA_2009.pem
Adding debian:NetLock_Arany_=Class_Gold=_Főtanúsítvány.pem
Adding debian:Network_Solutions_Certificate_Authority.pem
Adding debian:OISTE_WISeKey_Global_Root_GA_CA.pem
Adding debian:OISTE_WISeKey_Global_Root_GB_CA.pem
Adding debian:OpenTrust_Root_CA_G1.pem
Adding debian:OpenTrust_Root_CA_G2.pem
Adding debian:OpenTrust_Root_CA_G3.pem
Adding debian:PSCProcert.pem
Adding debian:QuoVadis_Root_CA.pem
Adding debian:QuoVadis_Root_CA_1_G3.pem
Adding debian:QuoVadis_Root_CA_2.pem
Adding debian:QuoVadis_Root_CA_2_G3.pem
Adding debian:QuoVadis_Root_CA_3.pem
Adding debian:QuoVadis_Root_CA_3_G3.pem
Adding debian:SZAFIR_ROOT_CA2.pem
Adding debian:SecureSign_RootCA11.pem
Adding debian:SecureTrust_CA.pem
Adding debian:Secure_Global_CA.pem
Adding debian:Security_Communication_EV_RootCA1.pem
Adding debian:Security_Communication_RootCA2.pem
Adding debian:Security_Communication_Root_CA.pem
Adding debian:Sonera_Class_2_Root_CA.pem
Adding debian:Staat_der_Nederlanden_EV_Root_CA.pem
Adding debian:Staat_der_Nederlanden_Root_CA_-_G2.pem
Adding debian:Staat_der_Nederlanden_Root_CA_-_G3.pem
Adding debian:Starfield_Class_2_CA.pem
Adding debian:Starfield_Root_Certificate_Authority_-_G2.pem
Adding debian:Starfield_Services_Root_Certificate_Authority_-_G2.pem
Adding debian:SwissSign_Gold_CA_-_G2.pem
Adding debian:SwissSign_Silver_CA_-_G2.pem
Adding debian:Swisscom_Root_CA_1.pem
Adding debian:Swisscom_Root_CA_2.pem
Adding debian:Swisscom_Root_EV_CA_2.pem
Adding debian:T-TeleSec_GlobalRoot_Class_2.pem
Adding debian:T-TeleSec_GlobalRoot_Class_3.pem
Adding debian:TUBITAK_Kamu_SM_SSL_Kok_Sertifikasi_-_Surum_1.pem
Adding debian:TURKTRUST_Certificate_Services_Provider_Root_2007.pem
Adding debian:TWCA_Global_Root_CA.pem
Adding debian:TWCA_Root_Certification_Authority.pem
Adding debian:Taiwan_GRCA.pem
Adding debian:TeliaSonera_Root_CA_v1.pem
Adding debian:Trustis_FPS_Root_CA.pem
Adding debian:TÜBİTAK_UEKAE_Kök_Sertifika_Hizmet_Sağlayıcısı_-_Sürüm_3.pem
Adding debian:TÜRKTRUST_Elektronik_Sertifika_Hizmet_Sağlayıcısı_H5.pem
Adding debian:USERTrust_ECC_Certification_Authority.pem
Adding debian:USERTrust_RSA_Certification_Authority.pem
Adding debian:UTN_USERFirst_Hardware_Root_CA.pem
Adding debian:VeriSign_Class_3_Public_Primary_Certification_Authority_-_G4.pem
Adding debian:VeriSign_Class_3_Public_Primary_Certification_Authority_-_G5.pem
Adding debian:VeriSign_Universal_Root_Certification_Authority.pem
Adding debian:Verisign_Class_3_Public_Primary_Certification_Authority_-_G3.pem
Adding debian:Visa_eCommerce_Root.pem
Adding debian:XRamp_Global_CA_Root.pem
Adding debian:certSIGN_ROOT_CA.pem
Adding debian:ePKI_Root_Certification_Authority.pem
Adding debian:thawte_Primary_Root_CA.pem
Adding debian:thawte_Primary_Root_CA_-_G2.pem
Adding debian:thawte_Primary_Root_CA_-_G3.pem
done.
done.
Processing triggers for sgml-base (1.26+nmu4ubuntu1) ...
Removing intermediate container 0f23a95bea42
---> 8f93746ccfe5
Step 7/7 : RUN apt-get install -y python
---> Running in fc2aeb8c23dd
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
file libmagic1 libpython-stdlib libpython2.7-minimal libpython2.7-stdlib
mime-support python-minimal python2.7 python2.7-minimal
Suggested packages:
python-doc python-tk python2.7-doc binfmt-support
The following NEW packages will be installed:
file libmagic1 libpython-stdlib libpython2.7-minimal libpython2.7-stdlib
mime-support python python-minimal python2.7 python2.7-minimal
0 upgraded, 10 newly installed, 0 to remove and 6 not upgraded.
Need to get 4145 kB of archives.
After this operation, 20.9 MB of additional disk space will be used.
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Get:2 http://101.44.1.125/files/B067000006FC9787/ubuntu.cn99.com/ubuntu xenial-updates/main amd64 python2.7-minimal amd64 2.7.12-1ubuntu0~16.04.3 [1261 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 python-minimal amd64 2.7.12-1~16.04 [28.1 kB]
Get:4 http://archive.ubuntu.com/ubuntu xenial/main amd64 mime-support all 3.59ubuntu1 [31.0 kB]
Get:5 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libpython2.7-stdlib amd64 2.7.12-1ubuntu0~16.04.3 [1880 kB]
Get:6 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 python2.7 amd64 2.7.12-1ubuntu0~16.04.3 [224 kB]
Get:7 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libpython-stdlib amd64 2.7.12-1~16.04 [7768 B]
Get:8 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 python amd64 2.7.12-1~16.04 [137 kB]
Get:9 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libmagic1 amd64 1:5.25-2ubuntu1.1 [216 kB]
Get:10 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 file amd64 1:5.25-2ubuntu1.1 [21.2 kB]
debconf: delaying package configuration, since apt-utils is not installed
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Selecting previously unselected package libpython2.7-minimal:amd64.
(Reading database ... 14046 files and directories currently installed.)
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Unpacking libpython2.7-minimal:amd64 (2.7.12-1ubuntu0~16.04.3) ...
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Unpacking python2.7-minimal (2.7.12-1ubuntu0~16.04.3) ...
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Preparing to unpack .../python-minimal_2.7.12-1~16.04_amd64.deb ...
Unpacking python-minimal (2.7.12-1~16.04) ...
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Preparing to unpack .../mime-support_3.59ubuntu1_all.deb ...
Unpacking mime-support (3.59ubuntu1) ...
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Preparing to unpack .../libpython2.7-stdlib_2.7.12-1ubuntu0~16.04.3_amd64.deb ...
Unpacking libpython2.7-stdlib:amd64 (2.7.12-1ubuntu0~16.04.3) ...
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Unpacking python2.7 (2.7.12-1ubuntu0~16.04.3) ...
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Unpacking libpython-stdlib:amd64 (2.7.12-1~16.04) ...
Setting up libpython2.7-minimal:amd64 (2.7.12-1ubuntu0~16.04.3) ...
Setting up python2.7-minimal (2.7.12-1ubuntu0~16.04.3) ...
Linking and byte-compiling packages for runtime python2.7...
Setting up python-minimal (2.7.12-1~16.04) ...
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Unpacking python (2.7.12-1~16.04) ...
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Unpacking file (1:5.25-2ubuntu1.1) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Setting up mime-support (3.59ubuntu1) ...
Setting up libpython2.7-stdlib:amd64 (2.7.12-1ubuntu0~16.04.3) ...
Setting up python2.7 (2.7.12-1ubuntu0~16.04.3) ...
Setting up libpython-stdlib:amd64 (2.7.12-1~16.04) ...
Setting up python (2.7.12-1~16.04) ...
Setting up libmagic1:amd64 (1:5.25-2ubuntu1.1) ...
Setting up file (1:5.25-2ubuntu1.1) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Removing intermediate container fc2aeb8c23dd
---> 057807ccc7d8
Successfully built 057807ccc7d8
Successfully tagged hanshanyang/coj_demo_01:latest安装完成我们
等他安装完成 会把这个状态创建成一个image存在本地
然后我们在 push到docker hub上去（远程） 和我们的git很相似
我们登录到docker hub上去（自己去官网创建账号）
登录上了
我们就要push了
这说明上传成功
那么从docker hub 下拉image也很简单 就是 pull
如果你本地有这个image他会自动更新到最新的
如果你要删除
Docker - docker images存储位置
docker镜像存储位置
例如我的driver是overlay2，则docker镜像的实际存储在/var/lib/docker/overlay2文件夹里面。
ls和du的不同
ls -alh dir/显示文件的大小或文件夹的元数据的大小。所以在ls -alh 文件夹时，元数据存储在一个block里面，一个block的大小(4.0K)，而不显示里面实际内容的大小。
du -sh dir/则显示文件夹或者文件实际磁盘占有的大小。
解决问题的过程 TLDR；
Google一下。找到
- 原来存储位置取决于driver。
- 输入
docker info查看，关键的信息：Server Version: 18.09.6, Storage Driver: overlay2, Docker Root Dir: /var/lib/docker。我的docker driver是overlay2。 ls -alh /varl/lib/docker/overlay2。咦！为什么都是4.0KB大小？和我的docker images显示的size不同，明明size有几G大。想起了linux在磁盘上表现为用block去存储，一个block是4.0KB。ls命令显示的只是文件夹的Meta-data，不是实际内容在磁盘占有大小。
怎么查看实际磁盘占有大小？
du -s /var/lib/docker/overlay2的最后一行。
或者du -sh /var/lib/docker/overlay2。
或者更human readable的，根据文件大小排序du -sh * | sort -h
Docker - 删除 untagged docker images
故障描述
[root@entel1 ~]# docker rmi entel_zmc_images:zmc_base
Untagged: entel_zmc_images:zmc_base
操作步骤
先移除掉 exited 状态的容器，然后删除 dangling 状态的镜像
docker rm $(docker ps -q -f status=exited)
docker rmi $(docker images -q -f dangling=true)当然了 整理成脚本更方便使用了：
#!/bin/sh
processes=`docker ps -q -f status=exited`
if [ -n "$processes" ]; then docker rm $processes fi images=`docker images -q -f dangling=true` if [ -n "$images" ]; then docker rmi $images fi我们今天的关于docker 系列 - Java程序制作Docker Image推荐方案(转载)和java实现docker的分享就到这里，谢谢您的阅读，如果想了解更多关于167 docker docker构建nginx容器系列问题 docker registry docker run docker toolbo、25.week4 docker build 也就是创建自己的image 上传image到dockerhub 从dockerhub下载images、Docker - docker images存储位置、Docker - 删除 untagged docker images的相关信息，可以在本站进行搜索。
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