Hardening container images
Container image hardening means to follow security best practices or baselines to configure a container image in order to reduce the attack surface. Image scanning tools only focus on finding publicly disclosed issues in applications bundled inside the image. But, following the best practices along with secure configuration while building the image ensures that the application has a minimal attack surface.
Before we start talking about the secure configuration baseline, let's look at what a container image is, as well as a Dockerfile, and how it is used to build an image.
Container images and Dockerfiles
A container image is a file that bundles the microservice binary, its dependencies, and configurations of the microservice, and so on. A container is a running instance of an image. Nowadays, application developers not only write code to build microservices; they also need to build the Dockerfile to containerize the microservice. To help build...
