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* Add repo metadata, start with categories! scripts for checking repo categories, updating the canonical set added categories to push.pl * Add initial set of semi-acurate categories * Adjustments following tianon's review * Simplify metadata.sh use cases (CI or interactive); just diff and check all the time Update README.md about metadata.sh usage * Unify the categories checks into one jq expressions * Update initial categories * Link to Docker docs for categories; minor categories script adjustments |
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README.md
FROM scratch
This image is most useful in the context of building base images (such as debian and busybox) or super minimal images (that contain only a single binary and whatever it requires, such as hello-world).
As of Docker 1.5.0 (specifically, docker/docker#8827), FROM scratch is a no-op in the Dockerfile, and will not create an extra layer in your image (so a previously 2-layer image will be a 1-layer image instead).
From https://docs.docker.com/engine/userguide/eng-image/baseimages/:
You can use Docker’s reserved, minimal image,
scratch, as a starting point for building containers. Using thescratch“image” signals to the build process that you want the next command in theDockerfileto be the first filesystem layer in your image.While
scratchappears in Docker’s repository on the hub, you can’t pull it, run it, or tag any image with the namescratch. Instead, you can refer to it in yourDockerfile. For example, to create a minimal container usingscratch:
FROM scratch
COPY hello /
CMD ["/hello"]