add job to create release

Author: Pat Hickey

.github/workflows/main.yml

@@ -40,3 +40,43 @@ jobs:
       - run: sudo make -j4 package
         shell: bash
         name: Build
+      - uses: actions/upload-artifact@v1
+        with:
+          name: ${{ format( 'packages-{}.tgz', matrix.os) }}
+          path: dist
+
+
+  release:
+    name: Release
+    needs: build
+    if: startsWith( 'TEST-wasi-sdk-', github.ref)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create release
+        id: create_release
+        uses: actions/create-release@v1.0.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false
+      - name: Download Linux build artifact
+        uses: actions/download-artifact@v1
+        with:
+          name: packages-ubuntu-latest
+      - name: Download Mac build artifact
+        uses: actions/download-artifact@v1
+        with:
+          name: packages-macos-latest
+      - name: Upload release assets
+        uses: actions/upload-release-asset@v1.0.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./packages-ubuntu-latest.tgz
+
+
+