Imports github.com/mitchellh/go-fs github.com/mitchellh/go-fs/fat github.com/mitchellh/multistep github.com/mitchellh/packer/packer github.com/mitchellh/packer/template/interpolate Standard library imports bufio bytes crypto/md5 crypto/sha1 crypto/sha256 encoding/hex errors fmt hash io io/ioutil log math math/rand net net/http net/url os path path/filepath reflect runtime strings time crypto/sha512