How to check which images are available in docker register

Docker is a very popular containerization solution that allows developers to package applications and their dependencies into a portable container, thereby simplifying application deployment and maintenance. In Docker, an image is the basis of the container runtime. It is a software package that can be deployed and run independently, which contains all the dependencies and configuration information of the application.

But what if we want to see which images are in the Docker registry? This article will introduce how to use Docker register to view the images in the Docker registry.

1. What is Docker register?

Docker register is an image registry officially provided by Docker, which can be used to store and manage container images. Docker register allows users to upload, download and share images, and is a very convenient way to obtain, deploy and manage Docker images.

2. How to view the image in Docker register?

To view the images in the Docker register, you can use the Docker CLI command line tool. Just enter the following command in the terminal window:

docker search 

The image name can be a wildcard. For example, if you want to find all images prefixed with "ubuntu", you can enter the following command:

docker search ubuntu*

This command will traverse all images in the Docker register and return matching results based on the image name and description information. In the output, each line contains the following information:

• Image name (name): The name of the image in the Docker register.
• Image description (description): Description information of the image, usually including detailed instructions about the image.
• Official logo (official): If this image is provided by the official, an "official" logo will be displayed.
• Number of stars (stars): The number of images marked as "interesting" or "good".
• Automated build: If the image is automatically built through the Dockerfile, "Yes" is displayed, otherwise "No" is displayed.

After finding the image you are interested in in the output, you can download it and use it in a Docker container.

3. Summary

Docker register is a very convenient Docker image registry that allows users to upload, download and share images. Using the Docker CLI command line tool, you can easily query all available images in the Docker register and select the image you are interested in downloading and using. This way you can deploy your applications into Docker containers, allowing for better portability and scalability.

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