TL;DR - They started with a 641MB dockerfile based on Ubuntu and Go, and whittled it down to 524KB and then 53.6kB. They took a busybox distro (they suggest Alpine), built with -t minify -squash -compress, and used the UPX minifying packer.<p>English version:
<a href="https://translate.google.com/translate?hl=en&sl=sv&u=https://www.cygate.se/blogg/extreme-docker-images-att-optimera-sina-dockers/" rel="nofollow">https://translate.google.com/translate?hl=en&sl=sv&u=https:/...</a>