{ "name": "Debian", "versions": [{ "major_version": "7", "minor_version": "9", "patch_version": "0", "codename": "wheezy", "iso_url": "http://cdimage.debian.org/cdimage/archive/7.9.0/amd64/iso-cd/debian-7.9.0-amd64-netinst.iso", "iso_checksum": "b6a19b4cf1d046e5eba1ae235a94824bca5a7c8f092a28216396c9d585ef709d" },{ "major_version": "8", "minor_version": "2", "patch_version": "0", "codename": "jessie", "iso_url": "http://cdimage.debian.org/debian-cd/8.2.0/amd64/iso-cd/debian-8.2.0-amd64-netinst.iso", "iso_checksum": "d393d17ac6b3113c81186e545c416a00f28ed6e05774284bb5e8f0df39fcbcb9" }], "boot_command": "install auto=true priority=critical preseed/url=http://{{ .HTTPIP }}:{{ .HTTPPort }}", "qemu": { "accelerator": "kvm", "qemuargs": [ [ "-m", "1024M" ] ] }, "virtualbox": { "guest_os_type": "Debian_64", "vboxmanage": [ ["modifyvm", "{{.Name}}", "--memory", "1024"] ], "guest_additions_mode": "disable" } }