Docker：镜像命令和容器命令

下面进入到关于镜像命令的学习中

镜像命令

docker images

这个命令的功能是列出本地的镜像

语法：

docker images [options] [repository[:tag]]

别名：

docker image ls, docker image list

参数选项：

1. -a：表示列出本地所有镜像
2. –digests：显示镜像的摘要信息
3. -f：显示满足条件的镜像
4. –format：指定返回值的模板文件
5. –no-trunc：显示完整的镜像信息
6. -q：只显示镜像id

具体使用：

root@VM-24-7-ubuntu:~# docker images
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
hello-world   latest    d2c94e258dcb   13 months ago   13.3kBroot@VM-24-7-ubuntu:~# docker images ubuntu
REPOSITORY   TAG       IMAGE ID   CREATED   SIZEroot@VM-24-7-ubuntu:~# docker images hello-world
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
hello-world   latest    d2c94e258dcb   13 months ago   13.3kB

docker image inspeact

显示镜像详细信息

docker image inspect [options] image [image...]

使用如下：

root@VM-24-7-ubuntu:~# docker images
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
hello-world   latest    d2c94e258dcb   13 months ago   13.3kBroot@VM-24-7-ubuntu:~# docker image inspect d2c94e258dcb
[{"Id": "sha256:d2c94e258dcb3c5ac2798d32e1249e42ef01cba4841c2234249495f87264ac5a","RepoTags": ["hello-world:latest"],"RepoDigests": ["hello-world@sha256:266b191e926f65542fa8daaec01a192c4d292bff79426f47300a046e1bc576fd"],"Parent": "","Comment": "buildkit.dockerfile.v0","Created": "2023-05-02T16:49:27Z","DockerVersion": "","Author": "","Config": {"Hostname": "","Domainname": "","User": "","AttachStdin": false,"AttachStdout": false,"AttachStderr": false,"Tty": false,"OpenStdin": false,"StdinOnce": false,"Env": ["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd": ["/hello"],"ArgsEscaped": true,"Image": "","Volumes": null,"WorkingDir": "/","Entrypoint": null,"OnBuild": null,"Labels": null},"Architecture": "amd64","Os": "linux","Size": 13256,"GraphDriver": {"Data": {"MergedDir": "/var/lib/docker/overlay2/ff16204e50b936f729c2efe9e015aa67e27c554d14ddbefdd51cf371bca8341d/merged","UpperDir": "/var/lib/docker/overlay2/ff16204e50b936f729c2efe9e015aa67e27c554d14ddbefdd51cf371bca8341d/diff","WorkDir": "/var/lib/docker/overlay2/ff16204e50b936f729c2efe9e015aa67e27c554d14ddbefdd51cf371bca8341d/work"},"Name": "overlay2"},"RootFS": {"Type": "layers","Layers": ["sha256:ac28800ec8bb38d5c35b49d45a6ac4777544941199075dff8c4eb63e093aa81e"]},"Metadata": {"LastTagTime": "0001-01-01T00:00:00Z"}}
]

docker tag

标记本地镜像，将其归入某一仓库

docker tag source_image[:tag] target_image[:tag]

别名：

docker image tag

样例：

root@VM-24-7-ubuntu:~# docker images
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
hello-world   latest    d2c94e258dcb   13 months ago   13.3kBroot@VM-24-7-ubuntu:~# docker image tag hello-world myregistry.com/myhelloworld

容器命令

docker run

功能：创建一个新的容器并运行一个命令

docker run [options] image [command] [arg...]

例如：

docker container run

具体使用：

使用Docker镜像nginx：lastest在后台模式启动一个容器，并把容器命名为mynginx：

root@VM-24-7-ubuntu:~# docker run --name mynginx -d nginx:latest
Unable to find image 'nginx:latest' locally
latest: Pulling from library/nginx
09f376ebb190: Pull complete 
5529e0792248: Pull complete 
9b3addd3eb3d: Pull complete 
57910a8c4316: Pull complete 
7b5f78f21449: Pull complete 
b7923aa4e8a6: Pull complete 
785625911f12: Pull complete 
Digest: sha256:0f04e4f646a3f14bf31d8bc8d885b6c951fdcf42589d06845f64d18aec6a3c4d
Status: Downloaded newer image for nginx:latest
3c6ab83484c462da21a583eedd8d2544858034de6f30ada9eac1d10c6779b791

使用镜像nginx:lastest，以后台模式启动一个容器，把容器的80端口映射到主机的80端口，主机的目录/data映射到容器的/data

docker run -p 80:80 -v /data:/data -d nginx:latest

docker ps

功能：列出容器

docker ps

别名：

docker container ls
docker container list
docker container ps

实例：

root@VM-24-7-ubuntu:~# docker ps -a
CONTAINER ID   IMAGE          COMMAND                  CREATED              STATUS                         PORTS     NAMES
3c6ab83484c4   nginx:latest   "/docker-entrypoint.…"   About a minute ago   Up About a minute              80/tcp    mynginx
b9c61a19414e   hello-world    "/hello"                 About an hour ago    Exited (0) About an hour ago             upbeat_swartz