CODEWITHSUNDEEP
docker
serkan
serkan

Reputation: 7141

docker run in detached mode - basic question

I run it in detached mode with,

docker run -d busybox:1.24

But it does not show up in docker ps

what is the reason? Should not it be working?

Should i have to pass "running command" like sleep 1000?

EDIT: Seems like the container stops when there is nothing to run.

Upvotes: 0

Views: 1051

Answers (2)

F.Madsen
F.Madsen

Reputation: 702

Depends on what the CMD directives says in your Dockerfile. If you dont run a script or program that is running continuous the the container will simple end right away.

To see the status of the container: -a shows even exited containers

docker ps -a

To see what happend when it ran

docker logs <container-id>

To run a cmd prompt

docker run -it <container-id> /bin/bash

To run in detached mode you need a script or command that will wait eg:

sleep infinite

Upvotes: 0

dijksterhuis
dijksterhuis

Reputation: 1271

When you run docker ps, you will only see a list of containers that are running.

To see all containers, including ones that are stopped, created, exited, restarting etc, you should use docker ps -a.

The busybox container isn’t running anything. So it will just exit as soon as it starts.

If you do docker run -d busybox:1.24 sleep 10, then run docker ps, you will see the running container - until the sleep process exits (after 10 seconds). At which point, you’ll need to use docker ps -a again.

Upvotes: 1

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