setup tests for HelloWorldService

Dockerfile

@@ -1,6 +1,22 @@
 # Multi-stage Dockerfile for JAX-WS Hello World Service
 
-# Stage 1: Build the application
+# Stage 1: Test the application
+FROM maven:3.8.6-openjdk-8 AS tester
+
+# Set working directory
+WORKDIR /app
+
+# Copy pom.xml and download dependencies (for better caching)
+COPY pom.xml .
+RUN mvn dependency:go-offline -B
+
+# Copy source code
+COPY src ./src
+
+# Run tests
+RUN mvn test
+
+# Stage 2: Build the application
 FROM maven:3.8.6-openjdk-8 AS builder
 
 # Set working directory
@@ -16,7 +32,7 @@ COPY src ./src
 # Build the application
 RUN mvn clean package -DskipTests
 
-# Stage 2: Run the application
+# Stage 3: Run the application
 FROM tomcat:9.0-jdk8
 
 # Remove default Tomcat applications