token: ********************{
"iso_url": "https://mirrors.example.com/ubuntu-22.04.iso"
}curl --location --request PUT '/servers//boot/custom_iso' \
--header 'token: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"iso_url": "https://mirrors.example.com/ubuntu-22.04.iso"
}'