How to remove images, containers and volumes from Docker
Docker is a container virtualisation tool that allows developers to create, deploy and run applications in different environments quickly and efficiently. Docker containers are software environments that contain everything needed to run an application, including code, libraries and dependencies, but isolated from the underlying operating system.
To remove Docker images, containers and volumes, the following steps can be taken:
Steps to remove Docker images
- List the Docker images:
docker images
This command displays a list of the Docker images currently on the system. Identify the image you want to remove.
- Delete a Docker image:
docker rmi <image_id>
The docker rmi command is used to remove an image from Docker. Replace <image_id> with the ID of the image you want to delete.
Steps to remove Docker containers
- List the Docker containers:
docker ps -a
This command displays a list of the Docker containers currently on the system. Identify the container you want to remove.
- Stop and delete a Docker container:
docker stop <container_id>
docker rm <container_id>
The docker stop command is used to stop a Docker container. Replace <container_id> with the ID of the container you want to stop. The docker rm command is used to remove a Docker container. Replace <container_id> with the ID of the container you want to remove.
- List the Docker volumes:
docker volume ls
This command displays a list of the Docker volumes currently on the system. Identify the volume you want to remove.
Steps to remove Docker volumes
- Delete a Docker volume:
docker volume rm <volume_name>
The docker volume rm command is used to remove a volume from Docker. Replace <volume_name> with the name of the volume you want to delete.
danger It is important to note that once images, containers or Docker volumes are deleted, they cannot be recovered. Therefore, it is advisable to make sure you are deleting what you really want to delete before executing the commands.