docker pull NAME[:TAG]
例如：
docker pull redis
默认是拉取最新版本的ubuntu镜像，也可以用TAG来拉取指定版本的镜像，例如：
docker pull redis:3.2
查看本地镜像
docker images dockerREPOSITORY TAG IMAGE ID CREATED SIZE redis 3.2 e97b1f10d81a 4 weeks ago 99.7MB ubuntu latest 452a96d81c30 5 weeks ago 79.6MB
第一个字段是指镜像来自于哪个仓库，
TAG：标签信息，通常用版本来定义
IMAGE ID：镜像唯一ID号
CREATED：镜像创建时间
SIZE：镜像大小
查看镜像详细信息
docker inspect image_id
例如：
docker inspect e97b1f10d81a
docker[
{
"Id": "sha256:e97b1f10d81a1da230e6327f5d7a13b1e5b3716bb979cdd583c608ecae88adef",
"RepoTags": [
"redis:3.2"
],
"RepoDigests": [
"redis@sha256:08d54e5c3ef779601f8db9b8fa3c67dab235559501df2b3d7b29ad088cffd02a"
],
"Parent": "",
"Comment": "",
"Created": "2018-05-02T04:58:15.600462978Z",
"Container": "1865914dcaf5fd0bf73d468197394e446ee195366474ba021ad3e05c63e42c6f",
"ContainerConfig": {
"Hostname": "1865914dcaf5",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"6379/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"GOSU_VERSION=1.10",
"REDIS_VERSION=3.2.11",
"REDIS_DOWNLOAD_URL=http://download.redis.io/releases/redis-3.2.11.tar.gz",
"REDIS_DOWNLOAD_SHA=31ae927cab09f90c9ca5954aab7aeecc3bb4da6087d3d12ba0a929ceb54081b5"
],
"Cmd": [
"/bin/sh",
"-c",
"#(nop) ",
"CMD [\"redis-server\"]"
],
"ArgsEscaped": true,
"Image": "sha256:e492993dac9b9b56a0138584a82120321a781a90dfd6ea7d4be9796befc5fd3d",
"Volumes": {
"/data": {}
},
"WorkingDir": "/data",
"Entrypoint": [
"docker-entrypoint.sh"
],
"OnBuild": [],
"Labels": {}
},
"DockerVersion": "17.06.2-ce",
"Author": "",
"Config": {
"Hostname": "",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"6379/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"GOSU_VERSION=1.10",
"REDIS_VERSION=3.2.11",
"REDIS_DOWNLOAD_URL=http://download.redis.io/releases/redis-3.2.11.tar.gz",
"REDIS_DOWNLOAD_SHA=31ae927cab09f90c9ca5954aab7aeecc3bb4da6087d3d12ba0a929ceb54081b5"
],
"Cmd": [
"redis-server"
],
"ArgsEscaped": true,
"Image": "sha256:e492993dac9b9b56a0138584a82120321a781a90dfd6ea7d4be9796befc5fd3d",
"Volumes": {
"/data": {}
},
"WorkingDir": "/data",
"Entrypoint": [
"docker-entrypoint.sh"
],
"OnBuild": [],
"Labels": null
},
"Architecture": "amd64",
"Os": "linux",
"Size": 99713084,
"VirtualSize": 99713084,
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/a1d2d89c4c73c7f99eb919514f08e1b6d1ae3029067088fe7a3d928145bb5c81/diff:/var/lib/docker/overlay2/64268fa606b7c2fc67618349903f041022294862fca78f85b2e86043d605f5f9/diff:/var/lib/docker/overlay2/93464e9ab4ab7ab0157e0b624650ab8bea63d945ea0f45b9d2cb3e442a88a6c0/diff:/var/lib/docker/overlay2/94498d8f8d29f86637266b84de944dc190a5f35d4cfd301c3ba928777c765fda/diff:/var/lib/docker/overlay2/4da4c723380aa1501f962009fc737489eeb14335d68f7d265b65049246b0f24c/diff",
"MergedDir": "/var/lib/docker/overlay2/72fe95c14d19dee7469c7312191060bc7af8820ba3cb71cf7ff85ac36794925e/merged",
"UpperDir": "/var/lib/docker/overlay2/72fe95c14d19dee7469c7312191060bc7af8820ba3cb71cf7ff85ac36794925e/diff",
"WorkDir": "/var/lib/docker/overlay2/72fe95c14d19dee7469c7312191060bc7af8820ba3cb71cf7ff85ac36794925e/work"
},
"Name": "overlay2"
},
"RootFS": {
"Type": "layers",
"Layers": [
"sha256:ba291263b0854589e32a6fa7775c898d662ed835cd686ac9ac2d33dcefa91a39",
"sha256:3d00edfc21708104f503f45fc30f3584b85654d93cb815d5cf155159499e4ab3",
"sha256:e9a42011bbb5977e682dffdd8dcda960434e21dcc5fabc3de74355946bd5e109",
"sha256:7a3bb4a3a1c4799c47827ea6e52734a4ec85c6694dda2762edb05a620ff63cef",
"sha256:848db56a6bea48c0267a336d3aae69665421dcdbd7db98869894bcb6877c5d07",
"sha256:75c6ebaf02dfc37a49055d355b1ee5a61059410a183c9f432d2912674f3954c5"
]
},
"Metadata": {
"LastTagTime": "0001-01-01T00:00:00Z"
}
}
]查看某一项内容：
docker inspect -f {{".Created"}} e97b1f10d81a
docker2018-05-02T04:58:15.600462978Z搜索镜像：默认是从官方的源中搜索镜像信息
docker search TERM
例如：
~ docker search mysql dockerNAME DESCRIPTION STARS OFFICIAL AUTOMATED mysql MySQL is a widely used, open-source relation… 6327 [OK] mariadb MariaDB is a community-developed fork of MyS… 1987 [OK] mysql/mysql-server Optimized MySQL Server Docker images. Create… 453 [OK] percona Percona Server is a fork of the MySQL relati… 342 [OK] zabbix/zabbix-server-mysql Zabbix Server with MySQL database support 99 [OK] hypriot/rpi-mysql RPi-compatible Docker Image with Mysql 85 centurylink/mysql Image containing mysql. Optimized to be link… 60 [OK] zabbix/zabbix-web-nginx-mysql Zabbix frontend based on Nginx web-server wi… 52 [OK] 1and1internet/ubuntu-16-nginx-php-phpmyadmin-mysql-5 ubuntu-16-nginx-php-phpmyadmin-mysql-5 35 [OK] tutum/mysql Base docker image to run a MySQL database se… 32 centos/mysql-57-centos7 MySQL 5.7 SQL database server 28 mysql/mysql-cluster Experimental MySQL Cluster Docker images. Cr… 25 schickling/mysql-backup-s3 Backup MySQL to S3 (supports periodic backup… 19 [OK] bitnami/mysql Bitnami MySQL Docker Image 15 [OK] linuxserver/mysql A Mysql container, brought to you by LinuxSe… 14 zabbix/zabbix-proxy-mysql Zabbix proxy with MySQL database support 13 [OK] centos/mysql-56-centos7 MySQL 5.6 SQL database server 8 openshift/mysql-55-centos7 DEPRECATED: A Centos7 based MySQL v5.5 image… 6 circleci/mysql MySQL is a widely used, open-source relation… 5 dsteinkopf/backup-all-mysql backup all DBs in a mysql server 3 [OK] mysql/mysql-router MySQL Router provides transparent routing be… 2 openzipkin/zipkin-mysql Mirror of https://quay.io/repository/openzip… 1 cloudposse/mysql Improved `mysql` service with support for `m… 0 [OK] ansibleplaybookbundle/mysql-apb An APB which deploys RHSCL MySQL 0 [OK] cloudfoundry/cf-mysql-ci Image used in CI of cf-mysql-release 0
星级越高，排名越靠前，official字段为OK的，表示为官方镜像。
删除镜像：
docker rmi NAME:TAG
例如：
dockerUntagged: redis:3.2 Untagged: redis@sha256:08d54e5c3ef779601f8db9b8fa3c67dab235559501df2b3d7b29ad088cffd02a Deleted: sha256:e97b1f10d81a1da230e6327f5d7a13b1e5b3716bb979cdd583c608ecae88adef Deleted: sha256:2ba10eb7ce40ff2fb8240b89efdfcaca65e766e322dd931811a70c089ce2524f Deleted: sha256:3ca88aa54c7634d16d8f6717aebdcef639cead694ced3c393b237117a5e1e30f Deleted: sha256:f115d9da9e55bc62cf359227dd64edc01911f7b1ed52afbffd7b00a2e6d5d102 Deleted: sha256:ba4122a82d251fc6b432237079bbb0d645ef47049e800c1f9e56d61fc8e823cf Deleted: sha256:2425077af8e28faee2557ddabb85a00938d81d13cf8c41897958d07aaeaa39d2 Deleted: sha256:ba291263b0854589e32a6fa7775c898d662ed835cd686ac9ac2d33dcefa91a39
docker images dockerREPOSITORY TAG IMAGE ID CREATED SIZE ubuntu latest 452a96d81c30 5 weeks ago 79.6MB
注意：当一个镜像有多个标签时，删除镜像只是删除了该镜像对应的标签，并不影响镜像文件，如果只剩下一个标签，则会彻底删除镜像文件本身，如上面的例子
如果使用镜像ID删除，则会先尝试删除该镜像所有的TAG，然后再彻底删除镜像文件本身
使用镜像启动一个容器：
docker run -itd ubuntu /bin/bash
查看本机上存在的容器：
docker ps -a dockerCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 3b00082711a9 ubuntu "/bin/bash" 21 hours ago Exited (255) 20 hours ago nostalgic_minsky 969a66036c68 ubuntu "/bin/bash" 21 hours ago Exited (127) 21 hours ago epic_banach
当镜像创建了容器后，删除时会报错，
docker rmi ubuntu dockerError response from daemon: conflict: unable to remove repository reference "ubuntu" (must force) - container 3b00082711a9 is using its referenced image 452a96d81c30
这时候只能使用“-f“强制删除
docker rmi -f ubuntu dockerUntagged: ubuntu:latest Untagged: ubuntu@sha256:c8c275751219dadad8fa56b3ac41ca6cb22219ff117ca98fe82b42f24e1ba64e Deleted: sha256:452a96d81c30a1e426bc250428263ac9ca3f47c9bf086f876d11cb39cf57aeec docker images dockerREPOSITORY TAG IMAGE ID CREATED SIZE
原文：http://blog.51cto.com/zengestudy/2125457