setup coverate report generation

docker-compose.coverage.yml

@@ -0,0 +1,32 @@
+version: '3.8'
+
+services:
+  coverage:
+    build:
+      context: .
+      dockerfile: Dockerfile.coverage.simple
+    image: jaxws-coverage:latest
+    container_name: jaxws-coverage-report
+    volumes:
+      # Mount source code
+      - ./src:/app/src:ro
+      - ./pom.xml:/app/pom.xml:ro
+      # Mount target directory to export coverage reports to host
+      - ./target:/app/target
+      # Mount Maven cache to speed up builds
+      - maven-cache:/root/.m2
+    environment:
+      - MAVEN_OPTS=-Xmx512m
+    command: >
+      sh -c "mvn test &&
+             echo '=================================================================================' &&
+             echo 'Coverage report generated successfully!' &&
+             echo '=================================================================================' &&
+             echo 'HTML Report: ./target/site/jacoco/index.html' &&
+             echo 'XML Report:  ./target/site/jacoco/jacoco.xml' &&
+             echo 'CSV Report:  ./target/site/jacoco/jacoco.csv' &&
+             echo '================================================================================'"
+
+volumes:
+  maven-cache:
+    driver: local