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Developer Tooling for Kubernetes in 2021 – Docker, BuildKit, Buildpacks, Jib and Kaniko (Part 4)

Over the last few blog posts, I've covered critical elements of developer tooling for Kubernetes and how things are looking in 2021. As we continue to dive into that discussion, we must not forget the process of building container images.

Of course, most of us create our images by writing Dockerfiles and building them with the Docker engine. And yet, more and more teams are adopting newer alternatives. After all, the Docker image format has been standardized as part of the OCI (Open Container Initiative) a long while ago.

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Create Fast and Easy Docker Images With Jib

In this post, we are going to take a look at Jib, a tool from Google in order to create Docker images in an easy and fast way. No need to create a Docker file, no need to install a Docker daemon, Jib just runs out-of-the-box.

1. Introduction

Up until now, we have been using the dockerfile-maven-plugin from Spotify in order to build and push our Docker images. This requires us to write a Docker file, according to best practices, to install a Docker daemon and to add the plugin to our build process. Jib will provide us a more easy way to create our Docker images. We only need to add and configure the Maven plugin and that is about it. Of course, we only believe this when we have tried it ourselves, and that is exactly what we are going to do.

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Containerize Spring Boot Apps Using Docker and Jib

We like the cut of your Jib.

We live in a world where we strive to scale automation as much as possible. Whether it’s offering cloud-based deployments, microservices, or containerization, we work to make things as efficient as possible. 

Containerization bundles an application along with all of its configuration libraries, files, and dependencies to run in a bug-free automatable process across different environments and platforms. A popular ecosystem for containerizing apps is Docker.