How to force Docker for a clean build of an image

Question

I have build a Docker image from a Docker file using the below command.

$ docker build -t u12_core -f u12_core .

When I am trying to rebuild it

Answer 1

GUI-driven approach: Open the docker desktop tool (that usually comes with Docker):

1. under "Containers / Apps" stop all running instances of that image
2. under "Images" remove the build image (hover over the box name to get a context menu), eventually also the underlying base image