multiarch.sh

#! /bin/bash

# Compatibility check for registry to support multi-architecutre docker images
# (also required for docker app support)
#
# Usage:
# docker login <REGISTRY> 
# ...
# ./multiarch.sh <REGISTRY>
#


set -x
set -e

REGISTRY=$1


# Pull busybox archtecture specific images used within this script
docker pull busybox@sha256:dd97a3fe6d721c5cf03abac0f50e2848dc583f7c4e41bf39102ceb42edfd1808
docker pull busybox@sha256:b6e25123419cbaa5f07cf8e1a8b2e813cc6e7939b6c0d38161c7cfa435dbdc8d

# Tag images for target registry and push
docker tag busybox@sha256:b6e25123419cbaa5f07cf8e1a8b2e813cc6e7939b6c0d38161c7cfa435dbdc8d $REGISTRY/busybox:arm8
docker tag busybox@sha256:dd97a3fe6d721c5cf03abac0f50e2848dc583f7c4e41bf39102ceb42edfd1808 $REGISTRY/busybox:amd64
docker push $REGISTRY/busybox:arm8
docker push $REGISTRY/busybox:amd64

# manifest CLI command is experimental
export DOCKER_CLI_EXPERIMENTAL=enabled

# Create multi-arch manifest
docker manifest create $REGISTRY/busybox $REGISTRY/busybox:amd64 $REGISTRY/busybox:arm8

# Push multi-arch manifest
docker manifest push $REGISTRY/busybox