Merge branch 'github-release'

.github/workflows/release.yml

@@ -0,0 +1,48 @@
+on:
+  push:
+    # Sequence of patterns matched against refs/tags
+    tags:
+    - '[0-9]*.[0-9]*'
+
+name: Create a release
+
+jobs:
+  build:
+    name: Upload Release Asset
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Create a .tar.gz
+        run: |
+          set -xv
+          t=${{ github.event.ref }}
+          vsn=${t##*/}
+          echo "vsn=$vsn" >> $GITHUB_ENV
+          ./helpers/export-from-git --override-version=$vsn
+          ./helpers/extract-top-changelog-entry > release-descr.txt
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ env.vsn }}
+          release_name: Release ${{ env.vsn }}
+          draft: false
+          prerelease: false
+          body_path: release-descr.txt
+      - name: Upload Release Asset
+        id: upload-release-asset 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          # This pulls from the CREATE RELEASE step above, referencing it's ID
+          # to get its outputs object, which include a `upload_url`. See this
+          # blog post for more info:
+          # https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./gpb-${{ env.vsn }}.tar.gz
+          asset_name: gpb-${{ env.vsn }}.tar.gz
+          asset_content_type: application/gzip