scratch预计阅读时间: 1 分钟
an explicitly empty image, especially for building images “FROM scratch”
This image is most useful in the context of building base images (such as
busybox) or super minimal images (that contain only a single binary and whatever it requires, such as
As of Docker 1.5.0 (specifically,
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).