11/23/2021»»Tuesday

Purge Docker Ubuntu

To completely uninstall Docker: Step 1. Dpkg -l grep -i docker. To identify what installed package you have: Step 2. Sudo apt-get purge -y docker-engine docker docker.io docker-ce docker-ce-cli sudo apt-get autoremove -y -purge docker-engine docker docker.io docker-ce. The above commands will not remove images, containers, volumes,. Remove Docker Images. To remove an images, Docker provides rmi option. Using this we can delete any docker images from our local system. For example use below command with changing IMAGE ID with your Docker image id. # docker rmi or you can simply remove images using repository name (image name) # docker rmi ubuntu.

  1. Docker Ubuntu Install
  2. Purge Docker Ubuntu Mac
  3. Purge Docker Ubuntu Windows 10
  4. Purge Docker Ubuntu Free

In our previous tutorials you have learned about installation of Docker engine on CentOS/RHEL and Ubuntu operating system and pulled images from Docker hub. After that created containers with images. This tutorial will help you to search, pull, list and delete Docker images from your host system.

Search Docker Images

First of all search Docker container images from Docker hub. For example, below command will search all images with Ubuntu and list as output

The result will look like below

Pull Docker Images

Now pull required docker image from docker hub on your local system using following commands. Below command will download image named “ubuntu”.

We are also downloading centos images from docker hub.

List Docker Images

Now make sure that above images has been downloaded successfully on your system. Below command list all images.

Remove Docker Images

To remove an images, Docker provides rmi option. Using this we can delete any docker images from our local system. For example use below command with changing IMAGE ID with your Docker image id.

or you can simply remove images using repository name (image name)

In case you have two images with same name, add tag name while deletion

Tutorial

A Docker Cheat Sheet

Introduction

Docker makes it easy to wrap your applications and services in containers so you can run them anywhere. As you work with Docker, however, it’s also easy to accumulate an excessive number of unused images, containers, and data volumes that clutter the output and consume disk space.

Docker gives you all the tools you need to clean up your system from the command line. This cheat sheet-style guide provides a quick reference to commands that are useful for freeing disk space and keeping your system organized by removing unused Docker images, containers, and volumes.

How to Use This Guide:

  • This guide is in cheat sheet format with self-contained command-line snippets
  • Jump to any section that is relevant to the task you are trying to complete.

The command substitution syntax, command $(command), used in the commands is available in many popular shells such as bash, zsh, and Windows Powershell.

Purging All Unused or Dangling Images, Containers, Volumes, and Networks

Docker provides a single command that will clean up any resources — images, containers, volumes, and networks — that are dangling (not associated with a container):

To additionally remove any stopped containers and all unused images (not just dangling images), add the -a flag to the command:

Removing Docker Images

Remove one or more specific images

Use the docker images command with the -a flag to locate the ID of the images you want to remove. This will show you every image, including intermediate image layers. When you’ve located the images you want to delete, you can pass their ID or tag to docker rmi:

List:

Remove:

Remove dangling images

Docker images consist of multiple layers. Dangling images are layers that have no relationship to any tagged images. They no longer serve a purpose and consume disk space. They can be located by adding the filter flag, -f with a value of dangling=true to the docker images command. When you’re sure you want to delete them, you can use the docker image prune command:

Note: If you build an image without tagging it, the image will appear on the list of dangling images because it has no association with a tagged image. You can avoid this situation by providing a tag when you build, and you can retroactively tag an images with the docker tag command.

List:

Remove:

Removing images according to a pattern

You can find all the images that match a pattern using a combination of docker images and grep. Once you’re satisfied, you can delete them by using awk to pass the IDs to docker rmi. Note that these utilities are not supplied by Docker and are not necessarily available on all systems:

List:

Remove:

Remove all images

All the Docker images on a system can be listed by adding -a to the docker images command. Once you’re sure you want to delete them all, you can add the -q flag to pass the Image ID to docker rmi:

List:

Remove:

Removing Containers

Docker Ubuntu Install

Remove one or more specific containers

Use the docker ps command with the -a flag to locate the name or ID of the containers you want to remove:

List:

Remove:

Remove a container upon exit

If you know when you’re creating a container that you won’t want to keep it around once you’re done, you can run docker run --rm to automatically delete it when it exits.

Run and Remove:

Remove all exited containers

You can locate containers using docker ps -a and filter them by their status: created, restarting, running, paused, or exited. To review the list of exited containers, use the -f flag to filter based on status. When you’ve verified you want to remove those containers, using -q to pass the IDs to the docker rm command.

List:

Remove:

Remove containers using more than one filter

Docker filters can be combined by repeating the filter flag with an additional value. This results in a list of containers that meet either condition. For example, if you want to delete all containers marked as either Created (a state which can result when you run a container with an invalid command) or Exited, you can use two filters:

List:

Remove:

Remove containers according to a pattern

You can find all the containers that match a pattern using a combination of docker ps and grep. When you’re satisfied that you have the list you want to delete, you can use awk and xargs to supply the ID to docker rm. Note that these utilities are not supplied by Docker and not necessarily available on all systems:

Purge Docker Ubuntu Mac

List:

Remove:

Stop and remove all containers

You can review the containers on your system with docker ps. Adding the -a flag will show all containers. When you’re sure you want to delete them, you can add the -q flag to supply the IDs to the docker stop and docker rm commands:

List:

Remove:

Purge Docker Ubuntu Windows 10

Removing Volumes

Remove one or more specific volumes - Docker 1.9 and later

Use the docker volume ls command to locate the volume name or names you wish to delete. Then you can remove one or more volumes with the docker volume rm command:

List:

Remove:

Download

Remove dangling volumes - Docker 1.9 and later

Since the point of volumes is to exist independent from containers, when a container is removed, a volume is not automatically removed at the same time. When a volume exists and is no longer connected to any containers, it’s called a dangling volume. To locate them to confirm you want to remove them, you can use the docker volume ls command with a filter to limit the results to dangling volumes. When you’re satisfied with the list, you can remove them all with docker volume prune:

List:

Remove:

Remove a container and its volume

If you created an unnamed volume, it can be deleted at the same time as the container with the -v flag. Note that this only works with unnamed volumes. When the container is successfully removed, its ID is displayed. Note that no reference is made to the removal of the volume. If it is unnamed, it is silently removed from the system. If it is named, it silently stays present.

Remove:

Ubuntu

Conclusion

Purge Docker Ubuntu Free

This guide covers some of the common commands used to remove images, containers, and volumes with Docker. There are many other combinations and flags that can be used with each. For a comprehensive guide to what’s available, see the Docker documentation for docker system prune, docker rmi, docker rm and docker volume rm. If there are common cleanup tasks you’d like to see in the guide, please ask or make suggestions in the comments.

Most Viewed Posts