This could be useful for handling flatpak applications in the installer.
All of the specified containers are downloaded into a single oci
layout.
JIRA: RHELCMP-14302
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
(cherry picked from commit 3d5348a6728b4d01cf8770494902e64c99e21a14)