Add release yaml

.github/workflows/release.yml

@@ -0,0 +1,88 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
+
+jobs:
+  setup:
+    name: Initial build env
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.13
+
+  build:
+    name: Checkout, build, archive, upload
+    runs-on: ubuntu-latest
+    needs: setup
+    steps:
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: List checked-out code
+      run: ls -al
+
+    - name: Build fat binary
+      run: make all-arch
+
+    - name: Archive binary
+      run: make releases
+
+    - name: Upload archived binary
+      uses: actions/upload-artifact@v2
+      with:
+        name: wayback
+        path: build/package/wayback*
+
+  checksum:
+    name: Get archived packages checksum
+    runs-on: ubuntu-latest
+    needs: build
+    outputs:
+      digest: ${{ steps.digest.outputs.result }}
+    steps:
+    - name: Download math result from build job
+      uses: actions/download-artifact@v2
+      with:
+        name: wayback
+
+    - name: Create all binary digest
+      id: digest
+      run: |
+        echo ::set-output name=result::$(find ./wayback* -type f -exec sha256sum {} +)
+
+  release:
+    name: Create and upload release
+    runs-on: ubuntu-latest
+    needs: [build, checksum]
+    steps:
+    - name: Download math result from build and checksum jobs
+      uses: actions/download-artifact@v2
+      with:
+        name: wayback
+        path: wayback # Put files to wayback directory
+
+    - name: Create Release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: Release ${{ github.ref }}
+        body: |
+          **Digests in this release:**
+
+          ${{ needs.checksum.outputs.digest }}
+        draft: false
+        prerelease: true
+
+    - name: Upload release assets
+      uses: fnkr/github-action-ghr@v1
+      if: startsWith(github.ref, 'refs/tags/')
+      env:
+        GHR_PATH: wayback/
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}