Binary only release artifacts (#1385)

- GitHub tagged releases now include direct binary downloads
- kpt release/README includes documentation for dry-running goreleaser

release/README.md

@@ -34,3 +34,17 @@ also updated with the `latest` tag for tagged releases.
 - `kpt-dev` release buckets
   - `gs://kpt-dev/latest`
   - `gs://kpt-dev/releases`
+
+# Dry-Run Goreleaser
+
+To test local changes to the [`goreleaser.yaml`](./tag/goreleaser.yaml) config. You may
+[install goreleaser](https://goreleaser.com/install/) locally and provide the
+`--skip-verify --skip-publish` flags.
+
+From the kpt directory you would run:
+
+```sh
+goreleaser release --skip-validate --skip-publish -f release/tag/goreleaser.yaml
+```
+
+The resulting release artifacts will be stored in the `./dist` directory.

release/tag/goreleaser.yaml

@@ -25,10 +25,15 @@ builds:
       - arm64
     ldflags: -s -w -X github.com/GoogleContainerTools/kpt/run.version={{.Version}}
 archives:
-  - files:
+  - id: archived
+    files:
       - LICENSES*
       - lib.zip*
     name_template: "{{ .ProjectName }}_{{ .Os }}_{{ .Arch }}-{{ .Version }}"
+  - id: bin-only
+    format: binary
+    name_template: "{{ .ProjectName }}_{{ .Os }}_{{ .Arch }}"
+
 checksum:
   name_template: 'checksums.txt'
 snapshot: