Update notes for releasing.

releasing/localbuild.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+
+# Usage
+#
+#   ./releasing/localbuild.sh
+#
+# The script attempts to use cloudbuild configuration
+# to create a release "locally".
+#
+# See https://cloud.google.com/cloud-build/docs/build-debug-locally
+#
+# At the time of writing,
+#
+#   https://pantheon.corp.google.com/cloud-build/triggers?project=kustomize-199618
+#
+# has a trigger such that whenever a git tag is
+# applied to the kustomize repo, the cloud builder
+# reads the repository-relative file
+#
+#   releasing/cloudbuild.yaml
+#  
+# Inside this yaml file is a reference to the script
+#
+#   releasing/cloudbuild.sh
+#
+# The script you are reading now does something
+# analogous via docker tricks.
+
+set -e
+
+if [ -z ${GOPATH+x} ]; then
+  echo GOPATH is unset; cannot proceed.
+  exit 1
+fi
+
+pushd $GOPATH/src/sigs.k8s.io/kustomize
+pwd
+
+# The first "step" in the following uses a special
+# goreleaser container image that the kubebuilder folks made.
+# TODO: On a rainy day, switch to something more standard.
+
+config=$(mktemp)
+cat <<EOF >$config
+steps:
+- name: "gcr.io/kubebuilder/goreleaser_with_go_1.12.5:0.0.1"
+  args: ["bash", "releasing/cloudbuild.sh", "--snapshot"]
+  secretEnv: ['GITHUB_TOKEN']
+secrets:
+- kmsKeyName: projects/kustomize-199618/locations/global/keyRings/github-tokens/cryptoKeys/gh-release-token
+  secretEnv:
+   GITHUB_TOKEN: CiQAyrREbPgXJOeT7M3t+WlxkhXwlMPudixBeiyWTjmLOMLqdK4SUQA0W+xUmDJKAhyfHCcwqSEzUn9OwKC7XAYcmwe0CCKTCbPbDgmioDK24q3LVapndXNvnnHvCjhOJNEr1o+P1DCF+LlzYV2YL8lP09rrKrslPg==
+EOF
+
+cloud-build-local \
+  --config=$config \
+  --bind-mount-source \
+  --dryrun=false \
+  .
+
+# Print results of local build, which went to ./dist
+echo "##########################################"
+tree ./dist
+echo "##########################################"
+
+popd