Update tunasync.yml

.github/workflows/tunasync.yml

@@ -28,6 +28,11 @@ jobs:
         make tunasync
         make tunasynctl
 
+    - name: Keep artifacts
+      uses: actions/upload-artifact@v1
+      with:
+        name: tunasync-bin
+        path: build/
 
   test:
     name: Test
@@ -65,4 +70,4 @@ jobs:
       uses: coverallsapp/github-action@v1.0.1
       with:
           github-token: ${{ secrets.github_token }}
-          path-to-lcov: coverage.lcov
+          path-to-lcov: coverage.lcov