Add sonar to workflow

Author: Oryan M

.github/workflows/pull-request.yml

@@ -27,12 +27,20 @@ jobs:
   analyze:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v2
       - name: Setup java
         uses: actions/setup-java@v2
         with:
           java-version: '8'
+          distribution: 'adopt'
+      - name: Cache Maven packages
+        uses: actions/cache@v2
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
       - name: Analyze with SonarCloud
-        run: mvn -B clean verify -Psonar -Dsonar.login=${{ secrets.SONAR_TOKEN }}
+        run: mvn -B verify -Psonar -Dsonar.login=${{ secrets.SONAR_TOKEN }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}