Discuss how to properly exit a Docker run

Docker is a containerization technology that can help users run different applications on multiple different platforms. Although Docker is easy to use, it is not easy for novices to exit Docker. In this article, we will discuss how to properly exit a Docker run.

First, let’s understand how Docker runs. Docker technology actually manages the running environment of the container through a daemon process (dockerd). When we start a container, Docker puts the container into an isolated running environment. This runtime environment is isolated from our host operating system, enabling containers to run on different platforms and environments.

When we want to exit a running Docker container, we can follow the following steps.

1. View running containers

First, we need to view the running containers. Run the following command:

docker ps

This command will list all running containers.

2. Exiting a running container

Once we determine the name or ID of the container we want to exit, we can run the following command to stop the container.

docker stop 容器ID或名称

This command will send a stop command to the Docker container and wait for the container to stop.

3. Force to quit the container

If the container does not want to stop, or we want to force quit the container, we can use the following command:

docker kill 容器ID或名称

This command will force Kill the container whether it wants to stop or not.

4. Remove stopped container

If the container has been stopped and we no longer need this container, we can delete it using the following command:

docker rm 容器ID或名称

This command will remove the container, but the container's data will be destroyed. If we want to preserve container data, we need to use volumes to mount the data to the host.

Summary

In this article, we learned how to properly exit a running Docker container. We can use docker ps to view running containers, use docker stop to stop running containers, use docker kill to force kill containers, use docker rm to delete the container. Before exiting the container, we should ensure that the container's data has been saved to the host so that the data is available when the container is started again later.

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