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In this article, the editor introduces "how to use Docker Hub" in detail, the content is detailed, the steps are clear, and the details are handled properly. I hope this "how to use Docker Hub" article can help you solve your doubts.

Docker Hub is a cloud-based repository where Docker users and partners can create, test, store and distribute container images. With Docker Hub, users can access public open source mirror repositories, and use space to create their own private repositories, automatic build functions, webhooks and workgroups.

Download the image from Docker Hub and run it locally

Check out the previous articles in this series to continue. Then, once Docker is running on your system, you can open the terminal and run:

$docker images

This command displays all docker images on the current system. If you want to deploy Ubuntu on your local machine, you might:

$docker pull ubuntu

If a Ubuntu image already exists on your system, this command will automatically update the system to the latest version. So if you want to update an existing image, simply run the docker pull command, which is easy. It's like apt-get update, without any confusion or trouble.

You already know how to run the mirror:

$docker run-it$ docker run-it ubuntu

The command prompt should change to the following:

Root@1b3ec4621737:/#

Now you can run any commands and utilities that belong to Ubuntu, which are included and safe. You can run all the experiments and tests you want on Ubuntu. Once you have completed the test, you can destroy the image and download a new one. There is no overhead in the virtual machine.

You can exit the container by running the exit command:

$exit

Now suppose you want to install Nginx on your system, run the search command to find the image you need:

$docker search nginx

As you can see, there are many Nginx images on DockerHub. Why? Because anyone can publish images, various images are optimized for different projects, so you can choose the right image. You just need to install the appropriate image for your needs.

Suppose you want to pull the Nginx image of Bitnami:

$docker pull bitnami/nginx

Now run:

$docker run-how does it bitnami/nginx publish images to Docker Hub?

Before that, we learned how to create a Docker image, which we can easily publish to DockerHub. First of all, you need to log in to DockerHub. If you don't have an account, please create an account. Then, you can open the terminal application and log in:

$docker login-username=

Replace "" with your own Docker Hub user name. Here is arnieswap:

$docker login-username=arnieswap

Enter the password and you log in. Now run the docker images command to get the ID of the image you created last time.

$docker images

Now, suppose you want to push the image ng to DockerHub. First, we need to mark the image (learn more about tags):

$docker tag e7083fd898c7 arnieswap/my_repo:testing

Now push the image:

$docker push arnieswap/my_repo

The push points to the docker.io/arnieswap/my_repo repository:

12628b20827e: Pushed8600ee70176b: Mounted from library/ubuntu2bbb3cec611d: Mounted from library/ubuntud2bb1fc88136: Mounted from library/ubuntua6a01ad8b53f: Mounted from library/ubuntu833649a3e04c: Mounted from library/ubuntutesting: digest: sha256:286cb866f34a2aa85c9fd810ac2cedd87699c02731db1b8ca1cfad16ef17c146 size: 1569

Oh yeah! Your image is being uploaded. Once you're done, open DockerHub, log in to your account, and you'll see your first Docker image. Now anyone can deploy your mirror image. This is the easiest and fastest way to develop and release software. Whenever you update the image, the user can simply run:

Docker run arnieswap/my_repo read here, this "how to use Docker Hub" article has been introduced, want to grasp the knowledge of this article still need to practice and use to understand, if you want to know more related articles, welcome to follow the industry information channel.

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