Imports github.com/mitchellh/packer/common github.com/mitchellh/packer/helper/config github.com/mitchellh/packer/packer github.com/mitchellh/packer/template/interpolate github.com/pierrec/lz4 github.com/klauspost/pgzip Standard library imports io os path/filepath regexp runtime archive/zip compress/gzip archive/tar fmt