only build website on release

Author: sungoki

.github/workflows/gh-pages.yml

@@ -33,3 +33,28 @@ jobs:
           yarn lerna publish --yes from-package --no-verify-access
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_PUBLISH_TOKEN }}
+
+  gh-pages:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v3
+      - name: Setup Node
+        uses: actions/setup-node@v3
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn config get cacheFolder)"
+      - name: Yarn Cache
+        uses: actions/[email protected]
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-modules-
+      - run: yarn install
+      - run: yarn build
+      - name: Deploy 🚀
+        uses: JamesIves/[email protected]
+        with:
+          branch: gh-pages
+          folder: packages/example/build/