HADOOP-18524. Addendum: Deploy Hadoop trunk version website. (#5389). Contributed by Ayush Saxena.

Reviewed-by: Vinayakumar B <vinayakumarb@apache.org>

.github/workflows/website.yml

@@ -41,8 +41,12 @@ jobs:
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
           restore-keys: |
             ${{ runner.os }}-maven-
+      - name: Build Hadoop maven plugins
+        run: cd hadoop-maven-plugins && mvn --batch-mode install
       - name: Build Hadoop
-        run: mvn clean install site -DskipTests -DskipShade
+        run: mvn clean install -DskipTests -DskipShade
+      - name: Build document
+        run: mvn clean site
       - name: Stage document
         run: mvn site:stage -DstagingDirectory=${GITHUB_WORKSPACE}/staging/
       - name: Deploy to GitHub Pages