Removing Docker Containers
Containers, once created, can take up system resources, and it’s good practice to remove unused or stopped containers to free up those resources.
Accessing a list of all existing containers
The list of all existing containers and their container IDs can be accessed using the command `docker ps -a`
docker ps -a
Removing a specific container
A specific container (which is not running) can be removed using its container id and the following command `docker rm <container_id_or_name>`
docker rm <container_id_or_name>
To remove a specific container that is currently running stop the container using `docker stop <container_id_or_name>` and then remove it.
Removing multiple containers
You can also remove multiple containers as follows:
docker rm <container_id_or_name_1> <container_id_or_name_2>
Forcibly removing running containers
To remove a container that is still running or to forcibly remove a container the -f flag can be used as follows:
docker rm -f <container_id_or_name>
Removing all unused containers
you can remove all the unused containers to free up system resources by using the following command:
docker container prune
How to Remove Docker Containers
Docker is a platform that provides a set of PaaS (Platform as a Service) products that help developers containerize applications, allowing them to run consistently across various supported environments. The core component of Docker is Docker Engine which consists of:
- Docker Daemon: The process responsible for building, running, and managing containerized applications.
- Docker Client: A command-line interface (CLI) used to interact with the Docker Daemon
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