commit 10a56af0df81a512a6239a3ecc1b292f1150a555
Author: Michal Domonkos <mdomonko@redhat.com>
Date:   Wed Aug 27 11:37:30 2025 +0200

    Don't use heredoc in Dockerfile
    
    The heredoc syntax (which we use for the podman shim) seems to only be
    supported in more recent Podman versions, ones that aren't necessarily
    available in GitHub Action runners (causing image build failures), so
    just use an echo instead.
    
    No functional change.
    
    (cherry picked from commit d8b9bd44ff587cffdfb0f2838aafeb65bb8b63a6)
