Use explore build script

Author: benjeffery

.github/workflows/build-deploy.yml

@@ -973,13 +973,7 @@ jobs:
           python -m pip install -r requirements.txt
       - name: Build the JupyterLite site
         run: |
-          cp README.md content
-          cd tskit-launcher
-          jlpm install
-          jlpm run build
-          pip install .
-          cd ..
-          jupyter lite build --contents content --output-dir dist
+          ./build.sh
       - name: Upload artifact
         uses: actions/[email protected]
         with: