iso_url      = "sn.itch.fyi/Repository/iso/Canonical/Ubuntu%20Server%2020.04/ubuntu-20.04.4-live-server-amd64.iso"
iso_checksum = "sha256:28CCDB56450E643BAD03BB7BCF7507CE3D8D90E8BF09E38F6BD9AC298A98EAAD"
// iso_url      = "sn.itch.fyi/Repository/iso/Canonical/Ubuntu%20Server%2020.04/ubuntu-20.04.2-live-server-amd64.iso"
// iso_checksum = "sha256:D1F2BF834BBE9BB43FAF16F9BE992A6F3935E65BE0EDECE1DEE2AA6EB1767423"