I am working lately with Docker, and I am using a good number of images for the projects that I am doing. I noticed that my hard drives have hidden contents, and also noticed that when re-pulling a deleted image, the image loads faster.

I can connect the dots and understand that this has to do with the contents that exist in what are described as layers, but I don’t know how to flush away these cached contents. I tried to find my way through the documentation, but it mostly describes how to manage images and containers and doesn’t have anything about cache or something like that.