Add GH actions setup.

Author: OlgaMaciaszek

.github/workflows/maven.yml

@@ -0,0 +1,42 @@
+# This workflow will build a Java project with Maven
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+
+name: Build
+
+on:
+  push:
+    branches: [ main, 3.1.x ]
+  pull_request:
+    branches: [ main, 3.1.x ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+      - name: Cache local Maven repository
+        uses: actions/cache@v2
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-maven-
+      - name: Build with Maven
+        run: ./mvnw -s .settings.xml clean org.jacoco:jacoco-maven-plugin:prepare-agent install -U -P sonar -nsu --batch-mode -Dmaven.test.redirectTestOutputToFile=true -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn
+      - name: Publish Test Report
+        uses: mikepenz/action-junit-report@v2
+        if: always() # always run even if the previous step fails
+        with:
+          report_paths: '**/surefire-reports/TEST-*.xml'
+      - name: Archive code coverage results
+        uses: actions/upload-artifact@v2
+        with:
+          name: surefire-reports
+          path: '**/surefire-reports/*'