set up goreleaser with github action (#725)

* add goreleaser

* Create release.yml

* setup github action

* rename to RELEASE_TOKEN

* newline at eol

* remove registry binary

.github/workflows/release.yml

@@ -0,0 +1,30 @@
+name: goreleaser
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Unshallow
+        run: git fetch --prune --unshallow
+      -
+        name: Set up Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.14
+      -
+        name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN }}

.goreleaser.yml

@@ -0,0 +1,36 @@
+# This is an example goreleaser.yaml file with some sane defaults.
+# Make sure to check the documentation at http://goreleaser.com
+# before:
+#   hooks:
+#     # You may remove this if you don't use go modules.
+#     - go mod download
+#     # you may remove this if you don't need go generate
+#     - go generate ./...
+builds:
+- id: crane
+  env:
+  - CGO_ENABLED=0
+  main: ./cmd/crane/main.go
+  binary: crane
+- id: gcrane
+  env:
+  - CGO_ENABLED=0
+  main: ./cmd/gcrane/main.go
+  binary: gcrane
+archives:
+- replacements:
+    darwin: Darwin
+    linux: Linux
+    windows: Windows
+    386: i386
+    amd64: x86_64
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "{{ .Tag }}-next"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'