第 3 章 映象 - 021 - Docker 映象小結
阿新 • • 發佈：2019-01-14
映象小結
映象的常用操作子命令：
- images 顯示映象列表
- history 顯示映象構建歷史
- commit 從容器建立新映象
- build 從 Dockerfile 構建映象
- tag 給映象打 tag
- pull 從 registry 下載映象
- push 將 映象 上傳到 registry
- rmi 刪除 Docker host 中的映象
- search 搜尋 Docker Hub 中的映象
rmi
rmi 只能刪除 host 上的映象，不會刪除 registry 的映象。
如果一個映象對應了多個 tag，只有當最後一個 tag 被刪除時，映象才被真正刪除。例如 host 中 gsophy/aaa 映象有兩個 tag：
1 [email protected]:~# docker images centos 2 REPOSITORY TAG IMAGE ID CREATED SIZE3 centos latest 1e1148e4cc2c 5 weeks ago 202MB 4 centos v1 1e1148e4cc2c 5 weeks ago 202MB 5 [email protected]:~#
刪除其中 centos:v1 只是刪除了 v1 tag，映象本身沒有刪除。
1 [email protected]:~# docker rmi centos:v1 2 Untagged: centos:v13 [email protected]:~# 4 [email protected]:~# docker images centos 5 REPOSITORY TAG IMAGE ID CREATED SIZE 6 centos latest 1e1148e4cc2c 5 weeks ago 202MB
只有當 centos:latest 也被刪除時，整個映象才會被刪除。
1 [email protected]:~# docker rmi centos:latest 2 Untagged: centos:latest 3 Untagged: [email protected]:38777a4106f0072649128ea4236241345a3ed21c55abbbd53bad5342549f6126 4 Deleted: sha256:1e1148e4cc2c148c6890a18e3b2d2dde41a6745ceb4e5fe94a923d811bf82ddb 5 Deleted: sha256:071d8bd765171080d01682844524be57ac9883e53079b6ac66707e192ea25956 6 [email protected]:~# docker images centos 7 REPOSITORY TAG IMAGE ID CREATED SIZE 8 [email protected]:~#
search
search 讓我們無需開啟瀏覽器，在命令列中就可以搜尋 Docker Hub 中的映象。
1 [email protected]:~# 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 [email protected]:~#
想知道映象都有哪些 tag，還是得訪問 Docker Hub。
---------------------引用來自--------------------
https://mp.weixin.qq.com/s?__biz=MzIwMTM5MjUwMg==&mid=2653587632&idx=1&sn=75d558655ce7885ca531f950ca416b50&chksm=8d3080a9ba4709bfdcf507ff7be409ac23ec1f0fd6d8efdd893d7489d777b16a99f5b5d99304&scene=21#wechat_redirect