add sign

.github/workflows/build.yml

@@ -15,6 +15,11 @@ jobs:
           go-version: '^1.16.3'
       - name: Build
         run: go run build/build.go
+
+      - name: Sign
+        uses: tristan-weil/ghaction-checksum-sign-artifact@v1.0.1
+        with:
+          path: dist/*
       - name: Release
         uses: softprops/action-gh-release@v1
         with: