fix bug with custom domain for gh pages staging.phcode.dev not owrking

Author: abose

.github/workflows/deploy-staging.yml

@@ -28,6 +28,10 @@ jobs:
           mkdir -p ./public
           cp -r ./phoenix/dist/. ./public
         shell: bash
+      - name: Creating CNAME for github page custom domain activation
+        run: |
+          echo "staging.phcode.dev" >> ./public/CNAME
+        shell: bash
       - name: Deploy Github Pages
         uses: peaceiris/actions-gh-pages@v3
         if: github.ref == 'refs/heads/main'