Error: Linking tmp mounts to host

I just tried to follow the basic example from `install.md` document. Unfortunately, this fails right at the start.

```
root@ishikawa ~# podman run --privileged --pid=host --net=none --security-opt label=type:unconfined_t ghcr.io/cgwalters/c9s-oscore bootc install --target-no-signature-verification /dev/nbd0
ERROR Linking tmp mounts to host: Exchanging /tmp <=> /tmp.tmp: Invalid argument (os error 22)
```

```
root@ishikawa ~# rpm -q podman
podman-4.2.0-9.el9_1.x86_64
root@ishikawa ~# cat /etc/os-release
NAME="Red Hat Enterprise Linux"
VERSION="9.1 (Plow)"
ID="rhel"
ID_LIKE="fedora"
VERSION_ID="9.1"
PLATFORM_ID="platform:el9"
```

Start with the basic example in install.md and reproduce the reported command on the stated RHEL 9.1 and Podman 4.2.0 environment. Trace the bootc install path around the “Linking tmp mounts to host” failure and determine whether the command can complete or the documentation must state an environment limitation.

索引モデルが issue の本文から書いたものです。