use podman save instead of skopeo

4 jobs for master in 7 minutes and 43 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Build
passed #2769
buildah
build_centos_7

00:02:58

passed #2770
buildah
build_centos_8

00:02:53

 
  Publish
passed #2771
buildah
publish_centos_7

00:01:59

passed #2772
buildah
publish_centos_8

00:02:37