Add UI test step

Author: MatMath

.github/workflows/node.js.yml

@@ -59,3 +59,8 @@ jobs:
       uses: coverallsapp/github-action@master
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Run UI tests
+      run: npm run test:ui
+      env:
+        BASE_URL: https://localhost:6984/prototype/_design/prototype