By default, when creating a container using the docker run command, the container will not be removed after the container has completed. 

The --rm flag can be used to remove the container after it has completed.

In this example, a container is created using the https://hub.docker.com/repository/docker/jeremycanfield/my-hello-world-image image and the container will be removed after it has been completed.

Almost always, this is coupled with the --detach flag to run the container in the background.

[john.doe@docker ~]# docker run --detach --rm --name my-container my-image:latest