docker所有命令集合
attach Attach local standard input, output, and error streams to a running container build Build an image from a Dockerfile commit Create a new image from a container's changes cp Copy files/folders between a container and the local filesystem create Create a new container diff Inspect changes to files or directories on a container's filesystem events Get real time events from the server exec Run a command in a running container export Export a container's filesystem as a tar archive history Show the history of an image images List images import import the contents from a tarball to create a filesystem image info Display system-wide information inspect Return low-level information on Docker objects kill Kill one or more running containers load Load an image from a tar archive or STDIN login Log in to a Docker registry logout Log out from a Docker registry logs Fetch the logs of a container pause Pause all processes within one or more containers port List port mappings or a specific mapping for the container ps List containers pull Pull an image or a repository from a registry push Push an image or a repository to a registry rename Rename a container restart Restart one or more containers rm Remove one or more containers rmi Remove one or more images run Run a command in a new container save Save one or more images to a tar archive (streamed to STDOUT by default) search Search the Docker Hub for images start Start one or more stopped containers stats Display a live stream of container(s) resource usage statistics stop Stop one or more running containers tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE top Display the running processes of a container unpause Unpause all processes within one or more containers update Update configuration of one or more containers version Show the Docker version information wait Block until one or more containers stop, then print their exit codes
查看某个命令的使用细节
docker xxx --help
从官方镜像库拉取镜像
docker pull python:3.7
显示本地镜像
docker image list
使用特定镜像启动一个容器，并进入命令行，注意，如果不带/bin/bash会直接启动python，在终端shell下直接输入exit可以退出终端。
docker run -it python:3.7 /bin/bash
docker run -itd python:3.7 /bin/bash
查看运行中的容器
docker ps -a
这里注意，当你运行一个容器后退出，这个容器虽然停止了，但是容器的实体还在。
启动一个已经穿见过的容器，XXX是容器的ID。如果需要shell交互，加 -i
docker start xxxx
对应的，停止一个容器，依然需要知道ID。
docker stop xxx
运行一个exit后不停止的容器
docker exec -it 243c32535da7 /bin/bash
当你基于某个镜像的容器进行了自己的环境配置后，想要导出你的容器，使用一下步骤
导出一个容器
docker export 861 -o p37numpy.tar
导入一个容器
docker import .p37numpy.tar py37:numpy
如果需要将镜像直接进行保存和载入，可以使用load和save
docker save 24f00 -o p37.tar
docker load -i .p37.tar
注意，如果使用了load，那么会替换一样的镜像。
如果是你改了某镜像的容器，并想把这些更改加入到镜像中，使用命令
95是ID， py37numpy是name，928是tag
docker commit -m "add numpy" -a "Yan" 95 py37numpy:928
commit以后就会出现一个新的镜像，可以push这个镜像，这里注意，xxy是你自己的仓库名字
docker push xxy/py37numpy
查看一个镜像的详细信息
docker inspect xxx
查看docker占用内存情况
docker system df
清理空间，慎用！
docker system prune
