A demonstration using GraalVM native image, melange, apko & Wolfi Linux to build a tiny tiny Java application.
The end goal is to see how small Java application container image can be.
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Since there's no GraalVM package for Wolfi Linux, I just need to quickly package it in a dirty way using melange.
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After that, I package my application with melange again, using the
native-imagepackage from the Melange package I got earlier. -
Finally, I use apko to produce the final container image. You can do multi-arch easily with apko along with other benefits like automatic SBOM generation, reproducible by default, etc.. but for the scope of this weekend hack, I just do
amd64only.
make native-image-pkg
make tiny-java-app-pkg
make container-image
docker load < tiny-java-app.tar
docker run tiny-java-app:latestThe image is 23.1 MB decompressed and 8.6MB compressed.
Along with all other benefits of the Chainguard's stack:
- Fully reproducible by default
- SBOM support
- Multi-arch
- etc...
docker images | grep tiny
tiny-java-app latest 80ac5468534c 53 years ago 23.1MB
Copyright 2023 Tuan Anh Tran me@tuananh.org
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