First time in this Forum. Hope this is the right category.
So I tried to build my custom image from the official Redash Image (version 8.0.0.b32245) and the Dockerfile in place. For that I used the command
docker build . --no-cache -t redash/oracle:v9.
Everything worked as expected. But when I list all images with
docker images -a there are a lot of none images. According to this ressource https://www.projectatomic.io/blog/2015/07/what-are-docker-none-none-images/ this are the “good ones” and don’t use any disk space.
As you can see in the screenshot, they seem to use a lot of disk space.
My question is, does each image use the size in the right column? And is there a way to delete them? If I try it with the
docker rmi <imageID> command, there is a Error:
Error response from daemon: conflict: unable to delete d1cc2eb53be3 (cannot be forced) - image has dependent child images
Thanks a lot.
OS Version/build: Debian Buster (x86_64 GNU/Linux) App version: Docker 19.03.4