Build and upload GitHub release assets in GitHub Actions

.github/workflows/assets.yml

@@ -0,0 +1,29 @@
+name: Release assets
+
+on:
+  push:
+    tags:
+      - '*.*.*'
+
+jobs:
+  assets:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 1
+
+      - name: Build release assets
+        run: make release
+
+      - name: Upload release assets
+        uses: alexellis/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          asset_paths: '["./docker-gen-*.tar.gz"]'
+
+      - name: Cleanup release assets
+        run: make dist-clean