Added docker-image guide directory/documentation (#30856)

* Added docker-image folder and created index.md with documentation for basic docker image commands

* corrected CLI link name from 'load' to 'image'

guide/english/docker/docker-image/index.md

@@ -0,0 +1,40 @@
+---
+title: Docker image
+---
+
+## List docker images
+
+`docker image` command is for viewing and working with the docker images currently built/saved on the machine.
+
+To list final builds type the following command:
+
+```
+docker image ls
+```
+
+And for a list of all images, including intermediate containers type:
+
+```
+docker image ls -a
+```
+
+### Remove unused images
+
+If you wish to remove unused intermediate images you can clean up using the prune command:
+
+```
+docker image prune
+```
+
+In order to remove all unused images you can use the prune command with the -a flag applied.
+To remove a specific image you can type the following:
+
+```
+docker image rm <image name>
+```
+
+This will remove the named image.
+All removed images will have to pulled/built again prior to container redeployment.
+
+#### More Information:
+- [Docker CLI docs: image](https://docs.docker.com/engine/reference/commandline/image/)