In this blog post I want to share an awesome and simple practice for beginners: How to develop a customized Dockerfile for a container image running on Kubernetes, using minikube.
Usually, when you use an existing container image to create your own customized configuration, you don’t have deep knowledge how that container image is built, and you have questions like: “What are the folder rights?”, or “What are the installation paths of applications?”, or other information you need to customize the container image to your needs.
You can learn about the existing image, when you visit the GitHub or Dockerhub project of that image (for example: links to GitHub “docker-library / repo-info” and Dockerhub “jenkins repo-info” project of Jenkins). But to ensure that your customization works, you have to run and access the running container in the commandline mode and verify your changes step by step running the image in Kubernetes.
Minikube comes with a container engine you can use. So minikube has all you need to build and run your container image on a local Kubernetes installation.
