SoFunction
Updated on 2025-04-11

Docker batch delete mirror tags with specific prefixes

The importance of Docker image management

Docker images are the basis for container operation, and each image contains all the dependencies and configurations needed to run the container. Over time, a large number of images may accumulate in the project, including different versions of development, testing and production environments. If these images are not cleaned up in time, they will occupy a lot of disk space and may even lead to insufficient storage space. In addition, too many mirrors can also make the mirror repository confusing and difficult to manage and find the required mirrors. Therefore, regularly cleaning up images that are no longer needed is an important step in maintaining the health of Docker environment.

Steps to delete images in batches

1. List all images with specific prefixes

Before deleting the image, you first need to list all images that start with a specific prefix. bydev-202411For example, we can use the following command to list all related images:

docker images | grep 'dev-202411'

This command lists all images containing dev-202411, including their ID, repository name, tag, and creation time.

2. Delete these images

For each image listed, we can use the docker rmi command to delete them. This process can be done manually or automatically via scripts. Here is an example of a bash script that automatically deletes all images starting with dev-202411:

#!/bin/bash

# Get all mirror IDs starting with dev-202411IMAGE_IDS=$(docker images --format "{{.Repository}}:{{.Tag}}" | grep 'dev-202411' | awk '{print $1}')

# traverse all imagesfor IMAGE in $IMAGE_IDS; do
    echo "Deleting the image: $IMAGE"
    docker rmi $IMAGE
done

The workflow of this script is as follows:

  • usedocker images --formatCommand gets the repository name and label of all images.
  • usegrepCommand filters out alldev-202411The mirror at the beginning.
  • useawkCommand extracts the full name of the image (including the repository name and tag).
  • Iterate through each image and usedocker rmiCommand to delete them.

3. Run the script

Save the above script as a file, e.g.delete_images.sh, and run it in the terminal:

chmod +x delete_images.sh
./delete_images.sh

This will give the script execution permissions and run the script to start the deletion process.

Things to note

There are several important things to consider before performing these operations:

  • Data backup: Make sure to back up all important data before deleting the image. Once the image is deleted, it cannot be restored.
  • Permissions issues: Make sure you have sufficient permissions to execute these commands. If not, you may need to contact the system administrator.
  • Test command: Before mass deletion, you can manually delete a mirror to test your commands to make sure they work as expected.

This is the article about Docker's method of deleting mirror tags with specific prefixes in batches. For more related content on Docker's mirror tags, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!