镜像的基本操作
$ docker image
Usage: docker image COMMAND
Manage images
Commands:
build Build an image from a Dockerfile
history Show the history of an image
import Import the contents from a tarball to create a filesystem image
inspect Display detailed information on one or more images
load Load an image from a tar archive or STDIN
ls List images
prune Remove unused images
pull Pull an image or a repository from a registry
push Push an image or a repository to a registry
rm Remove one or more images
save Save one or more images to a tar archive (streamed to STDOUT by default)
tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
Run 'docker image COMMAND --help' for more information on a command.
查看镜像的分层(layer)
docker image history <image_name>
[root@localhost ~]# docker image history insaneloafer/hello:1.0
IMAGE CREATED CREATED BY SIZE COMMENT
e3a733c6921a 24 hours ago /bin/sh -c #(nop) CMD ["python3" "/hello.py… 0B
<missing> 24 hours ago /bin/sh -c #(nop) ADD file:d739451e741e82c2f… 22B
<missing> 24 hours ago /bin/sh -c apt-get update && DEBIAN_FRON… 127MB
<missing> 7 weeks ago /bin/sh -c #(nop) CMD ["bash"] 0B
<missing> 7 weeks ago /bin/sh -c #(nop) ADD file:3a18768000089a105… 80MB
镜像的拉取Pull Image
默认从Docker Hub拉取,如果不指定版本,会拉取最新版
$ docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
69692152171a: Pull complete
49f7d34d62c1: Pull complete
5f97dc5d71ab: Pull complete
cfcd0711b93a: Pull complete
be6172d7651b: Pull complete
de9813870342: Pull complete
Digest: sha256:df13abe416e37eb3db4722840dd479b00ba193ac6606e7902331dcea50f4f1f2
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest
指定版本
$ docker pull nginx:1.20.0
1.20.0: Pulling from library/nginx
69692152171a: Already exists
965615a5cec8: Pull complete
b141b026b9ce: Pull complete
8d70dc384fb3: Pull complete
525e372d6dee: Pull complete
Digest: sha256:ea4560b87ff03479670d15df426f7d02e30cb6340dcd3004cdfc048d6a1d54b4
Status: Downloaded newer image for nginx:1.20.0
docker.io/library/nginx:1.20.0
从Quay上拉取镜像
$ docker pull quay.io/bitnami/nginx
Using default tag: latest
latest: Pulling from bitnami/nginx
2e6370f1e2d3: Pull complete
2d464c695e97: Pull complete
83eb3b1671f4: Pull complete
364c139450f9: Pull complete
dc453d5ae92e: Pull complete
09bd59934b83: Pull complete
8d2bd62eedfb: Pull complete
8ac060ae1ede: Pull complete
c7c9bc2f4f9d: Pull complete
6dd7098b85fa: Pull complete
894a70299d18: Pull complete
Digest: sha256:d143befa04e503472603190da62db157383797d281fb04e6a72c85b48e0b3239
Status: Downloaded newer image for quay.io/bitnami/nginx:latest
quay.io/bitnami/nginx:latest
镜像的查看
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
quay.io/bitnami/nginx latest 0922eabe1625 6 hours ago 89.3MB
nginx 1.20.0 7ab27dbbfbdf 10 days ago 133MB
nginx latest f0b8a9a54136 10 days ago 133MB
- 详细查看某个镜像的信息:
docker image inspect <image ID>
$ docker image inspect 94b72494607b
[
{
"Id": "sha256:94b72494607b406caa2e2c0f3d79d6c49fd4d65fd56688ec0171a1f2b356bb2d",
"RepoTags": [
"quay.io/bitnami/nginx:latest"
],
"RepoDigests": [
"quay.io/bitnami/nginx@sha256:0caf2be99c1f13a6a5c5c7c38c1e472b413ca62160d3be2cfd0d30d62af7d8f5"
],
"Parent": "",
"Comment": "",
"Created": "2021-11-23T02:18:43.577193295Z",
"Container": "e51d3aaafbf51cd81b13cf1d8ac5f3a733b3ab1e9086f13030d27a9a5f14c503",
"ContainerConfig": {
"Hostname": "e51d3aaafbf5",
"Domainname": "",
"User": "1001",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"8080/tcp": {},
"8443/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/opt/bitnami/common/bin:/opt/bitnami/nginx/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"HOME=/",
"OS_ARCH=amd64",
"OS_FLAVOUR=debian-10",
"OS_NAME=linux",
"BITNAMI_APP_NAME=nginx",
"BITNAMI_IMAGE_VERSION=1.21.4-debian-10-r19",
"NGINX_ENABLE_CUSTOM_PORTS=no",
"NGINX_HTTPS_PORT_NUMBER=",
"NGINX_HTTP_PORT_NUMBER="
],
...
镜像的删除
$ docker image rm 0922eabe1625
Untagged: quay.io/bitnami/nginx:latest
Untagged: quay.io/bitnami/nginx@sha256:d143befa04e503472603190da62db157383797d281fb04e6a72c85b48e0b3239
Deleted: sha256:0922eabe16250e2f4711146e31b7aac0e547f52daa6cf01c9d00cf64d49c68c8
Deleted: sha256:5eee4ed0f6b242e2c6e4f4066c7aca26bf9b3b021b511b56a0dadd52610606bd
Deleted: sha256:472a75325eda417558f9100ff8b4a97f4a5e8586a14eb9c8fc12f944b26a21f8
Deleted: sha256:cdcb5872f8a64a0b5839711fcd2a87ba05795e5bf6a70ba9510b8066cdd25e76
Deleted: sha256:e0f1b7345a521469bbeb7ec53ef98227bd38c87efa19855c5ba0db0ac25c8e83
Deleted: sha256:11b9c2261cfc687fba8d300b83434854cc01e91a2f8b1c21dadd937e59290c99
Deleted: sha256:4819311ec2867ad82d017253500be1148fc335ad13b6c1eb6875154da582fcf2
Deleted: sha256:784480add553b8e8d5ee1bbd229ed8be92099e5fb61009ed7398b93d5705a560
Deleted: sha256:e0c520d1a43832d5d2b1028e3f57047f9d9f71078c0187f4bb05e6a6a572993d
Deleted: sha256:94d5b1d6c9e31de42ce58b8ce51eb6fb5292ec889a6d95763ad2905330b92762
Deleted: sha256:95deba55c490bbb8de44551d3e6a89704758c93ba8503a593cb7c07dfbae0058
Deleted: sha256:1ad1d903ef1def850cd44e2010b46542196e5f91e53317dbdb2c1eedfc2d770
Note
正在运行的container和停止掉但是没有删除的container,不能删除其image。