How to cleanup docker containers and images on linux machines

Question

We have Linux redhat machine with docker and docker compose

Now we want to clean all containers and images - like we have scratch new docker

As I understand to get that , we need to perform the following procedure with this order:

Am I right with this procedure? , or I missing something?

 1. docker stop <CONTAINER ID>
 2. docker container rm <CONTAINER ID>
 3. docker image rm  <IMAGE ID>

example

first find - CONTAINER ID

docker ps
CONTAINER ID        IMAGE                                             COMMAND                  CREATED             STATUS              PORTS                                        NAMES
654fa81f4439        confluentinc/cp-enterprise-control-center:5.0.0   "/etc/confluent/dock…"   9 minutes ago       Up 9 minutes        0.0.0.0:9021->9021/tcp                       control-center

1)

stop container

docker stop 654fa81f4439
654fa81f4439

2)

delete container

docker container rm 654fa81f4439
654fa81f4439

3)

find image ID

docker images
REPOSITORY                                  TAG                 IMAGE ID            CREATED             SIZE

confluentinc/cp-enterprise-control-center   5.0.0               e0bd9a5edb95        15 months ago       617MB

delete image

ocker image rm  e0bd9a5edb95
Untagged: confluentinc/cp-enterprise-control-center:5.0.0
Untagged: confluentinc/cp-enterprise-control-center@sha256:2e406ff8c6b1b8be6bf01ccdf68b14be0f0759db27c050dddce4b02ee0894127
Deleted: sha256:e0bd9a5edb9510a326934fa1a80a4875ab981c5007354de28f53bfb3e11bc34a
Deleted: sha256:c23255297f6d75f156baf963786d3ded1d045b726d74ed59c258dc8209bac078
Deleted: sha256:6cab492e72ca2578897b7ceecb196e728671158e262957f3c01e53fd42f6f8b4

Answer 1

In short, yes, it is the correct procedure to clear all the containers and images.

But you can do it more easily. For example:

• Stop all containers at once: docker container stop $(docker container ls -aq)
• Remove all stopped containers: docker container prune --force
• Remove all unnused images: docker image prune --all --force

Sometimes Docker volumes are used for containers to persist data. You may want to clean them too (docker volume prune --force).

---

Others Docker resources may be left on your system (such as networks and build caches).

You can appeal to docker system prune to remove all unused data:

$ docker system prune --all --volumes
WARNING! This will remove:
        - all stopped containers
        - all networks not used by at least one container
        - all volumes not used by at least one container
        - all images without at least one container associated to them
        - all build cache
Are you sure you want to continue? [y/N] y