undefined | Better HN

0 pointsffk4y ago0 comments

Docker save (and presumably podman too) adds that metadata as a file in a tar. Each layer becomes a tar that is nested in the top level tar.

0 comments

2 comments · 2 top-level

A container registry allows you to download multiple layer simultaneously and only those that you need (that you don't have in cache).

e12e4y ago

Indeed, registries don't do much more than what:

    docker image save foo:latest \
      | ssh pod docker image load

does (the stream is a docker tar archive with layers and metadata).

j / k navigate · click thread line to collapse