[Podman] What is rundir?

When I pull an image, there is an error. Login Succeeded! Trying to pull xxx.com/name:7.0... Getting image source signatures Copying blob sha256:b294330b903102b99b9272e8c639135e74bc7935a32d0b8a06443b86779ed546 Copying blob sha256:e5a33881590f6c79e508c14a7a529207fbb473d352ff3ea6f02c5cc8c685502f Copying blob sha256:d9ba75c043daa80149b5d7bfe3a8732ea56ea5f7bf7e6baf50f213352dde872f Copying config sha256:093e23f8df9aa2891b3e87581b2fc136569db41ef01617b0c35a13bafb6a1c20 Writing manifest to image destination Storing signatures 093e23f8df9aa2891b3e87581b2fc136569db41ef01617b0c35a13bafb6a1c20 093e23f8df9aa2891b3e87581b2fc136569db41ef01617b0c35a13bafb6a1c20 Error: chown /home/myuser/rundir/containers/overlay-containers/6c47fca6915e0e1491b1f29e3e4e1e1dd6b53620591ff65d9cc61094fc4912e0/userdata: operation not permitted