镜像小结
镜像的常用操作子命令：
- images 显示镜像列表
- history 显示镜像构建历史
- commit 从容器创建新镜像
- build 从 Dockerfile 构建镜像
- tag 给镜像打 tag
- pull 从 registry 下载镜像
- push 将 镜像 上传到 registry
- rmi 删除 Docker host 中的镜像
- search 搜索 Docker Hub 中的镜像
rmi
rmi 只能删除 host 上的镜像，不会删除 registry 的镜像。
如果一个镜像对应了多个 tag，只有当最后一个 tag 被删除时，镜像才被真正删除。例如 host 中 gsophy/aaa 镜像有两个 tag：
1 root@ubuntu:~# docker images centos 2 REPOSITORY TAG IMAGE ID CREATED SIZE 3 centos latest 1e1148e4cc2c 5 weeks ago 202MB 4 centos v1 1e1148e4cc2c 5 weeks ago 202MB 5 root@ubuntu:~#
删除其中 centos:v1 只是删除了 v1 tag，镜像本身没有删除。
1 root@ubuntu:~# docker rmi centos:v1 2 Untagged: centos:v1 3 root@ubuntu:~# 4 root@ubuntu:~# docker images centos 5 REPOSITORY TAG IMAGE ID CREATED SIZE 6 centos latest 1e1148e4cc2c 5 weeks ago 202MB
只有当 centos:latest 也被删除时，整个镜像才会被删除。
1 root@ubuntu:~# docker rmi centos:latest 2 Untagged: centos:latest 3 Untagged: centos@sha256:38777a4106f0072649128ea4236241345a3ed21c55abbbd53bad5342549f6126 4 Deleted: sha256:1e1148e4cc2c148c6890a18e3b2d2dde41a6745ceb4e5fe94a923d811bf82ddb 5 Deleted: sha256:071d8bd765171080d01682844524be57ac9883e53079b6ac66707e192ea25956 6 root@ubuntu:~# docker images centos 7 REPOSITORY TAG IMAGE ID CREATED SIZE 8 root@ubuntu:~#
search
search 让我们无需打开浏览器，在命令行中就可以搜索 Docker Hub 中的镜像。
1 root@ubuntu:~# docker search centos 2 NAME DESCRIPTION STARS OFFICIAL AUTOMATED 3 centos The official build of CentOS. 5112 [OK] 4 ansible/centos7-ansible Ansible on Centos7 119 [OK] 5 jdeathe/centos-ssh CentOS-6 6.10 x86_64 / CentOS-7 7.5.1804 x86… 105 [OK] 6 consol/centos-xfce-vnc Centos container with "headless" VNC session… 75 [OK] 7 imagine10255/centos6-lnmp-php56 centos6-lnmp-php56 49 [OK] 8 centos/mysql-57-centos7 MySQL 5.7 SQL database server 45 9 tutum/centos Simple CentOS docker image with SSH access 43 10 openshift/base-centos7 A Centos7 derived base image for Source-To-I… 39 11 gluster/gluster-centos Official GlusterFS Image [ CentOS-7 + Glust… 38 [OK] 12 centos/postgresql-96-centos7 PostgreSQL is an advanced Object-Relational … 36 13 centos/python-35-centos7 Platform for building and running Python 3.5… 33 14 kinogmt/centos-ssh CentOS with SSH 25 [OK] 15 openshift/jenkins-2-centos7 A Centos7 based Jenkins v2.x image for use w… 20 16 centos/php-56-centos7 Platform for building and running PHP 5.6 ap… 18 17 pivotaldata/centos-gpdb-dev CentOS image for GPDB development. Tag names… 10 18 openshift/wildfly-101-centos7 A Centos7 based WildFly v10.1 image for use … 6 19 openshift/jenkins-1-centos7 DEPRECATED: A Centos7 based Jenkins v1.x ima… 4 20 darksheer/centos Base Centos Image -- Updated hourly 3 [OK] 21 pivotaldata/centos Base centos, freshened up a little with a Do… 2 22 pivotaldata/centos-mingw Using the mingw toolchain to cross-compile t… 2 23 pivotaldata/centos-gcc-toolchain CentOS with a toolchain, but unaffiliated wi… 1 24 blacklabelops/centos CentOS Base Image! Built and Updates Daily! 1 [OK] 25 pivotaldata/centos7-test CentosOS 7 image for GPDB testing 0 26 pivotaldata/centos7-build CentosOS 7 image for GPDB compilation 0 27 smartentry/centos centos with smartentry 0 [OK] 28 root@ubuntu:~#
想知道镜像都有哪些 tag，还是得访问 Docker Hub。
---------------------引用来自--------------------
https://mp.weixin.qq.com/s?__biz=MzIwMTM5MjUwMg==&mid=2653587632&idx=1&sn=75d558655ce7885ca531f950ca416b50&chksm=8d3080a9ba4709bfdcf507ff7be409ac23ec1f0fd6d8efdd893d7489d777b16a99f5b5d99304&scene=21#wechat_redirect