Multi-stage build in Docker - how to build an optimal image

Docker is an incredibly powerful tool that is changing the way we build and deploy applications. In his blog post, the author highlights the 'multi-stage build' technique, which allows for the creation of more optimized container images. The main idea is to break the build process into several stages, which minimizes the final image size. By using multiple build stages, we can utilize different base images for different parts of the project, eliminating the need to install all libraries in the final image. As a result, we achieve more efficient and faster applications that are easier to manage. The article explains step-by-step how to set up multi-stage builds in Docker, providing practical examples and tips for developers. It’s worth noting the benefits of this method, especially in the context of continuous integration and deployment.