How to close the created docker

With the popularity of Docker, more and more developers are beginning to use Docker for software development and deployment. One of the advantages of Docker is the containerization technology, which allows us to manage the dependencies and configuration of the application in different environments and reduces the risk of problems with the application. However, in some cases, we need to close or delete the Docker container that has been created. This article will introduce how to shut down a Docker container.

Before we start, we need to confirm that Docker has been installed. Then, we need to first list all running Docker containers. We can use the following command:

docker ps

This will list the details of all running containers, including container ID, image name, port mapping, creation time, etc. In this list, we can find the container ID that needs to be closed.

Now, we have two ways to shut down the container:

1. Use the docker stop command

We can use the following command to stop the running Docker Container:

docker stop <container_id></container_id>

Where, <container_id></container_id> is the ID of the Docker container to be closed. This command will send a SIGTERM signal to the container, causing the process to stop and exit the container, and the container to enter a stopped state.

After the container is stopped, we can use the docker ps command again to confirm that the container has been stopped and is no longer running.

2. Use the docker kill command

If we want to force the container to close, we can use the docker kill command. This command will immediately stop the container and force terminate all running processes in the container. We can do this using the following command:

docker kill <container_id></container_id>

Similarly, <container_id></container_id> is the ID of the Docker container that we want to shut down. Be careful when using this command as it may cause running processes to not stop properly.

Summary

In this article, we introduced how to shut down a running Docker container. We can use the docker stop command to shut down the container normally or the docker kill command to forcefully shut down the container. Choosing the appropriate method according to different situations can help us better manage Docker and ensure the normal operation of the system.

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