Mount an ISO image in a Solaris Zone
There is no direct way to mount an ISO image onto a Solaris Zone. However, you can mount an ISO image onto the global zone (the server which hosts the zone) and then present it onto the guest zone.
ISO
How to mount an ISO image in SUN Solaris
In Sun Solaris, we can use the Loopback File driver to mount an ISO image without having to write the ISO image onto a CD or DVD. Following procedure should help you mount an ISO image in Sun Solaris