Update build.yml

Author: sterlp

.github/workflows/build.yml

@@ -49,9 +49,12 @@ jobs:
           target-folder: javadoc-core # url will be https://<username>.github.io/<repo>/javadoc-core
           project: maven # or gradle
           subdirectories: core
+          javadoc-source-folder: target/site
+          custom-command: mvn site
 
   deploy:
     runs-on: ubuntu-latest
+    needs: [build]
     if: ${{ github.ref == 'refs/heads/main' }}
     steps:
     - uses: actions/checkout@v4