Imports github.com/hashicorp/packer/common github.com/hashicorp/packer/helper/config github.com/hashicorp/packer/helper/multistep github.com/hashicorp/packer/packer github.com/hashicorp/packer/template/interpolate github.com/mitchellh/mapstructure Standard library imports bytes context errors fmt io io/ioutil log os os/exec path/filepath strings syscall time