use podman save instead of skopeo

4 jobs for master in 6 minutes and 36 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #9112
buildah
build_centos_7

00:03:02

passed #9113
buildah
build_centos_8

00:04:06

 
  Publish
passed #9114
buildah
publish_centos_7

00:00:29

passed #9115
buildah
publish_centos_8

00:02:28