How to Remove Docker Images and Containers

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 remove unnecessary Docker images and containers from your host machine.

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  <IMAGE ID> 

To find all images on your system use following command. This will help you to find ID of images.

root@tecadmin:~# docker images  REPOSITORY     TAG        IMAGE ID            CREATED          VIRTUAL SIZE centos         latest     2933d50b9f77        11 days ago      196.6 MB ubuntu         latest     36248ae4a9ac        11 days ago      188 MB 

Remove Docker Containers

To remove a containers, Docker provides rm option. Using this we can delete any docker containers from our local system. For example use below command with changing <CONTAINER ID> with your Docker container id.

# docker rm  <CONTAINER ID> 

To list all containers on your system using ps option, but ps will show only running containers. So to view all containers use -a parameter with ps.

root@tecadmin:~# docker ps -a  CONTAINER ID   IMAGE    COMMAND      CREATED       STATUS      PORTS  NAMES f2582758af13   ubuntu   "/bin/bash"  2 hours ago   Up 2 hours         first_ubuntu 2b199b9976c4   centos   "/bin/bash"  3 days ago    Up 3 hours         thirsty_yalow 

Stop & Remove All Docker Containers

If you want to remove all docker containers. You can use simply following commands. First command will stop all running docker containers and second command will delete them.

# docker stop $(docker ps -a -q) # docker rm $(docker ps -a -q) 

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