Build 100kB Docker Images from Scratch

Posted on Mon 06 May 2019 in docker • Tagged with docker, c, scratchLeave a comment

📓 The Gist

You may think your 100mB Alpine images are small--but how about 100kB? Smaller images ship more quickly, and contain fewer attack vectors. Moreover, by optimizing images, you discover and isolate exactly what is needed for your app to run.

Let's Optimize.

There are two key characteristics of scratch-based docker images: 1. The Dockerfile has two build stages: * a builder--which contains all of the build dependencies including source, libraries and tools and.. * a final image, containing the binary and any run-time dependencies (config files, certificates and dynamically linked libraries) 2. The final image is FROM scratch -- the empty docker …

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