Update workflow

Author: charlescyt

.github/workflows/build.yml

@@ -5,6 +5,8 @@ on:
     tags:
       - 'v*.*.*'
 
+  workflow_dispatch:
+
 jobs:
   build-and-deploy:
     runs-on: ubuntu-latest
@@ -41,7 +43,6 @@ jobs:
 
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0
-        if: github.ref == 'refs/heads/main'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./build/web