Add new action release-asset-creator

.github/workflows/03-release-asset-creator.yml

@@ -0,0 +1,38 @@
+name: release-asset-creator
+on:
+  release:
+    types: [published]
+jobs:
+  my-job:
+    runs-on: ubuntu-latest
+    env:
+      ARCHIVE_NAME: ${{ github.event.repository.name }}-${{ github.event.release.tag_name }}
+    steps:
+      - name: download-source
+        run: curl -sL "${{ github.event.release.tarball_url }}" >"$ARCHIVE_NAME".tar.gz
+      - name: unzip-source
+        run: mkdir "$ARCHIVE_NAME" && tar -xzf "$ARCHIVE_NAME".tar.gz -C "$ARCHIVE_NAME" --strip-components 1
+      - name: clean-source
+        run: rm -rf "$ARCHIVE_NAME"/.github
+      - name: create-archive
+        run: tar -czf "$ARCHIVE_NAME".tar.gz "$ARCHIVE_NAME"
+      - name: create-checksum
+        run: sha256sum "$ARCHIVE_NAME".tar.gz >checksum.txt
+      - name: upload-archive
+        uses: actions/upload-release-asset@v1
+        with:
+          upload_url: ${{ github.event.release.upload_url }}
+          asset_path: ${{ env.ARCHIVE_NAME }}.tar.gz
+          asset_name: ${{ env.ARCHIVE_NAME }}.tar.gz
+          asset_content_type: application/gzip
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: upload-checksum
+        uses: actions/upload-release-asset@v1
+        with:
+          upload_url: ${{ github.event.release.upload_url }}
+          asset_path: checksum.txt
+          asset_name: checksum.txt
+          asset_content_type: text/plain
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}