3 IFS
='-' read -r TAG string
<<< "$DOCKER_TAG"
5 docker manifest create b
4bz
/homer
:$TAG b
4bz
/homer
:$TAG-amd64 b
4bz
/homer
:$TAG-arm32v7 b
4bz
/homer
:$TAG-arm64v8
6 docker manifest annotate b
4bz
/homer
:$TAG b
4bz
/homer
:$TAG-arm32v7 --os linux
--arch arm
7 docker manifest annotate b
4bz
/homer
:$TAG b
4bz
/homer
:$TAG-arm64v8 --os linux
--arch arm64
--variant v8
8 docker manifest push
--purge b
4bz
/homer
:$TAG