refactor: workflow 수정

.github/workflows/gatsby-build.yml

@@ -38,13 +38,16 @@ jobs:
           # Temporarily move the public directory
           mv public ../public_temp
           
-          # Clean the working directory
-          git clean -fdx
-          
+          # Remove all files except .git directory
+          find . -mindepth 1 -not -name '.git' -exec rm -rf {} +
+
           # Restore the public directory
           mv ../public_temp public
           
+          # Copy build files into the root directory
+          cp -R public/* .
+
           # Commit and push changes
-          git add -f .
+          git add -A
           git commit -m "Deploy Gatsby build to publish branch"
           git push origin publish --force