buildah-manifest - Create and manipulate manifest lists and image indexes.
buildah manifest COMMAND [OPTIONS] [ARG...]
The buildah manifest command provides subcommands which can be used to:
* Create a working Docker manifest list or OCI image index. * Add an entry to a manifest list or image index for a specified image. * Add or update information about an entry in a manifest list or image index. * Delete a working container or an image. * Push a manifest list or image index to a registry or other location.
| Command | Man Page | Description |
| add | buildah-manifest-add(1) |
Add an image to a manifest list or image index.
|
| annotate | buildah-manifest-annotate(1) |
Add or update information about an image in a manifest list or image index.
|
| create | buildah-manifest-create(1) |
Create a manifest list or image index.
|
| exists | buildah-manifest-exists(1) |
Check if a manifest list exists in local storage.
|
| inspect | buildah-manifest-inspect(1) |
Display the contents of a manifest list or image index.
|
| push | buildah-manifest-push(1) |
Push a manifest list or image index to a registry or other location.
|
| remove | buildah-manifest-remove(1) |
Remove an image from a manifest list or image index.
|
| rm | buildah-manifest-rm(1) |
Remove manifest list from local storage.
|
Assuming the Containerfile uses RUN instructions, the host needs a way to execute non-native binaries. Configuring this is beyond the scope of this example. Building a multi-arch manifest list shazam in parallel across 4-threads can be done like this:
$ platarch=linux/amd64,linux/ppc64le,linux/arm64,linux/s390x
$ buildah build --jobs=4 --platform=$platarch --manifest shazam .
Note: The --jobs argument is optional, and the -t or --tag option should not be used.
Assuming example.com/example/shazam:$arch images are built separately on other hosts and pushed to the example.com registry. They may be combined into a manifest list, and pushed using a simple loop:
$ REPO=example.com/example/shazam
$ buildah manifest create $REPO:latest
$ for IMGTAG in amd64 s390x ppc64le arm64; do
buildah manifest add $REPO:latest docker://$REPO:IMGTAG;
done
$ buildah manifest push --all $REPO:latest
Note: The add instruction argument order is <manifest> then <image>. Also, the --all push option is required to ensure all contents are pushed, not just the native platform/arch.
Special care is needed when removing and pushing manifest lists, as opposed to the contents. You almost always want to use the manifest rm and manifest push --all subcommands. For example, a rename and push could be performed like this:
$ buildah tag localhost/shazam example.com/example/shazam
$ buildah manifest rm localhost/shazam
$ buildah manifest push --all example.com/example/shazam
buildah(1), buildah-manifest-create(1), buildah-manifest-add(1), buildah-manifest-remove(1), buildah-manifest-annotate(1), buildah-manifest-inspect(1), buildah-manifest-push(1), buildah-manifest-rm(1)