Netboot.xyz docker container > how to see my custom ISO to boot off of

in this case, you dont need to mess with the ISO, just look at your assets and tell it to download the debian version stuff you want, follow the netboot.xyz guidance (or our blog on netboot) for pointing locally

https://blog.linuxserver.io/2019/12/16/netboot-xyz-docker-network-boot-server-pxe/