Container doesn't exist after Rest API successfully creates it

Question

Use RestAPI to create a container with command "/bin/bash". The container is created successfully because the RestAPI returns container ID. But I can't start this container. Command "docker ps" always show no container, even after I manually start this container.

[root@CentOS Base]# curl -X POST -H "Content-Type: application/json" 127.0.0.1:4243/containers/create -d '{"Id" : "99", "Command" : "/bin/bash", "Image" : "centos", "Status" : "exit 0"}' {"Id":"c0384a81ba1e6bbb23c4268c580899f9e38afb9dec11e2107baafcf7744bf999","Warnings":null}

[root@CentOS Base]# docker start c0384a81ba1e6bbb23c4268c580899f9e38afb9dec11e2107baafcf7744bf999 c0384a81ba1e6bbb23c4268c580899f9e38afb9dec11e2107baafcf7744bf999

[root@CentOS Base]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

[root@CentOS Base]#

Rob van Laarhoven · Accepted Answer · 2015-09-17 09:52:28Z

1

docker ps -a probably does show the container. It is stopped. It's important to note that containers are designed to stop once the command executed within them has exited. So when starting the container /bin/bash is executed and after that the container stops. You need to run the container with a command that stays active. Try running with "Command" : "ping -c 1000 localhost"

answered Sep 17, 2015 at 9:52

Rob van Laarhoven

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3 Comments

JackChen255 Over a year ago

I think command /bin/bash can last forever. When I use command "docker run -i -t centos /bin/bash", the new container can automatically in start state. Is there corresponding option "-i -t" in RestAPI /containers/create?

Rob van Laarhoven Over a year ago

I think your api creates an image. It does not start a container.

JackChen255 Over a year ago

"docker run -i -t centos /bin/bash" creates a new container. I just tried it again.

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