[2314849771] Upstream Reporter: Shion Tanaka
Upstream issue status: Closed
Upstream description:

If I run skopeo inspect tarball: on a Docker V 2, Schema 2 (docker-archive) image saved with podman save or docker save, the response is an OCI Image.

$ podman pull docker.io/library/alpine
$ podman save -o alpine-docker.tar --format docker-archive alpine
$ podman save --format docker-archive alpine | gzip > alpine-docker.tar.gzip
$ podman save -o alpine-oci.tar --format oci-archive alpine
$ podman save --format oci-archive alpine | gzip > alpine-oci.tar.gzip
$ ls -l
total 20912
-rw-r--r--. 1 core core 9120256 May 24 17:47 alpine-docker.tar
-rw-r--r--. 1 core core 3958359 May 24 17:47 alpine-docker.tar.gzip
-rw-r--r--. 1 core core 4205568 May 24 17:48 alpine-oci.tar
-rw-r--r--. 1 core core 4122277 May 24 17:49 alpine-oci.tar.gzip
$ skopeo inspect tarball:alpine-docker.tar --format '{{(index .LayersData 0).MIMEType}}'
application/vnd.oci.image.layer.v1.tar
$ skopeo inspect tarball:alpine-docker.tar.gzip --format '{{(index .LayersData 0).MIMEType}}'
application/vnd.oci.image.layer.v1.tar+gzip
$ skopeo inspect tarball:alpine-oci.tar --format '{{(index .LayersData 0).MIMEType}}'
application/vnd.oci.image.layer.v1.tar
$ skopeo inspect tarball:alpine-oci.tar.gzip --format '{{(index .LayersData 0).MIMEType}}'
application/vnd.oci.image.layer.v1.tar+gzip

Is it possible to fix it to respond with Docker V2S2?