docker context 的切换退出

docker context 可用于直接把docker image push到 cloud上，并切换到context 中，直接执行docker ps 去查看在cloud上运行的container 的状态。
参看：https://xieheng0915.github.io/mangxier/Azure_tech/azure_jenkins_001.html

docker context create myacicontext
docker context use myacicontext

之后想要退出context，查看local 的docker image 和 container，怎么也找不到command,其实只要切换到default context 就可以了

>docker context ls
NAME                TYPE                DESCRIPTION                               DOCKER ENDPOINT               KUBERNETES ENDPOINT   ORCHESTRATOR
default             moby                Current DOCKER_HOST based configuration   unix:///var/run/docker.sock                         swarm
myacicontext *      aci                 arial-gp@eastus                                                                               
>docker context use default
default
>docker ps //显示local 环境的docker 
CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS              PORTS                                                       NAMES
c227222a7e44        jenkins/jenkins:lts   "/sbin/tini -- /usr/…"   27 hours ago        Up 27 hours         0.0.0.0:5000->5000/tcp, 0.0.0.0:8080->8080/tcp, 50000/tcp   youthful_hodgkin

此时也可以docker context rm [context name]

docker context official doc:
https://docs.docker.com/engine/reference/commandline/context/