Identifying unused files in Docker images with Dive
One of the challenges of using Docker is that images can often be quite large, especially for interpreted languages. Large Docker images increase pull time and disk space usage, making it difficult to manage and deploy applications. In this article, we’ll take a look at a tool called “dive” that can help to optimize the size of Docker images. Dive is a command-line tool that allows users to analyze the addition of each layer to the filesystem of a Docker image. This information can be used to identify unused or unnecessary files, which can then be removed to reduce the size of the image. Let’s take a look at how I used dive to optimize the size of the Docker image for the open-source web scanner Wapiti. ...