Attempt native imagebuilder image

REMOVED/hack/ensure-goss.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+
+# Copyright 2019 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+[[ -n ${DEBUG:-} ]] && set -o xtrace
+
+source hack/utils.sh
+
+# SHA are for amd64 arch.
+_version="3.1.4"
+darwin_sha256="ddb663a3e4208639d90b89ebdb69dc240ec16d6b01877ccbf968f76a58a89f99"
+linux_sha256="9084877c2eea7e41fae60aaa6cdf7a7dde4e5de5e3d1f693ec8e812419ac54e9"
+_bin_url="https://github.com/YaleUniversity/packer-provisioner-goss/releases/download/v${_version}/packer-provisioner-goss-v${_version}-${HOSTOS}-${HOSTARCH}.tar.gz"
+_tarfile="${HOME}/.packer.d/plugins/packer-provisioner-goss.tar.gz"
+_binfile="${HOME}/.packer.d/plugins/packer-provisioner-goss"
+
+# Get a shasum for right OS's binary
+case "${HOSTOS}" in
+linux)
+  _sha256="${linux_sha256}"
+  ;;
+darwin)
+  _sha256="${darwin_sha256}"
+  ;;
+*)
+  echo "unsupported HOSTOS=${HOSTOS}" 1>&2
+  return 1
+  ;;
+esac
+
+# Check if current binary is latest
+if [ -f "${_binfile}" ]; then
+  current_shasum=$(get_shasum "${_binfile}")
+  if [ "$current_shasum" != "$_sha256" ]; then
+    echo "Wrong version of binary present."
+  else
+    echo "Right version of binary present"
+    # Check if binary is executable.
+    # If not, delete it and proceed. If it is executable, exit 0
+    { [ -x "${_binfile}" ] && exit 0; } || rm -f "${_binfile}"
+  fi
+fi
+
+# download binary, verify shasum, make it executable and clean up trash files.
+_bin_dir="$(dirname "${_tarfile}")"
+mkdir -p "${_bin_dir}" && cd "${_bin_dir}"
+curl -SsL "${_bin_url}" -o "${_tarfile}"
+tar -C "${_bin_dir}" -xzf "${_tarfile}"
+rm "${_tarfile}"
+printf "%s *${_binfile}" "${_sha256}" >"${_binfile}.sha256"
+if ! checksum_sha256 "${_binfile}.sha256"; then
+  _exit_code="${?}"
+  rm -f "${_binfile}.sha256"
+  exit "${_exit_code}"
+fi
+rm -f "${_binfile}.sha256"
+chmod 0755 "${_binfile}"