goreleaser scripts for building/creating a release on a workstation

Signed-off-by: Steve Kriss <steve@heptio.com>

hack/goreleaser.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# Copyright 2018 the Heptio Ark contributors.
+#
+# 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
+
+# $PUBLISH must explicitly be set to 'true' for goreleaser
+# to publish the release to GitHub.
+if [ "${PUBLISH:-}" != "true" ]; then
+    SKIP_PUBLISH="--skip-publish"
+else
+    SKIP_PUBLISH=""
+fi
+
+if [ -z "${GITHUB_TOKEN}" ]; then
+    echo "GITHUB_TOKEN must be set"
+    exit 1
+fi
+
+# TODO derive this from the major+minor version
+if [ -z "${RELEASE_NOTES_FILE}" ]; then
+    echo "RELEASE_NOTES_FILE must be set"
+    exit 1
+fi
+
+export GIT_SHA=$(git describe --tags --always)
+
+GIT_DIRTY=$(git status --porcelain 2> /dev/null)
+if [[ -z "${GIT_DIRTY}" ]]; then
+    export GIT_TREE_STATE=clean
+else
+    export GIT_TREE_STATE=dirty
+fi
+
+goreleaser release \
+    --rm-dist \
+    --release-notes="${RELEASE_NOTES_FILE}" \
+    "${SKIP_PUBLISH}"