Update build.yml

Author: sterlp

.github/workflows/build.yml

@@ -17,6 +17,7 @@ jobs:
       uses: actions/setup-node@v4
       with:
         node-version: '22.x'
+        cache: 'npm'
     - name: Set up JDK 21
       uses: actions/setup-java@v4
       with:
@@ -25,3 +26,12 @@ jobs:
         cache: maven
     - name: Build with Maven
       run: mvn -B package --file pom.xml
+    - name: PMD with Maven
+      run: mvn pmd:pmd --file pom.xml
+
+    - name: Deploy Nexus
+      if: ${{ github.ref == 'refs/heads/main' }}
+      run: mvn -B source:jar deploy --file pom.xml -DskipTests
+      env:
+        MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+        MAVEN_PASSWORD: ${{ secrets.OSSRH_TOKEN }}