Build a live arch iso with sshd

I’m the owner of a little pc that I use as a server. It’s a headless machine, that means I don’t have a screen linked to it and that’s a pain when something goes wrong. Yesterday I decided to migrate the hard drive to a new 500 GB one. I wanted to be able to do it without plugging the screen that is so far away and any keyboard. To be able to do it I needed an iso that’s using dhcp and spawning a sshd daemon.