restore rag-service

rag-service/docker/Dockerfile

@@ -0,0 +1,19 @@
+# Stage 1: Build
+FROM eclipse-temurin:25-jdk AS build
+WORKDIR /app
+COPY ../pom.xml .
+COPY ../.mvn .mvn
+COPY ../mvnw .
+RUN chmod +x mvnw && ./mvnw dependency:go-offline -B
+COPY ../src src
+RUN ./mvnw package -DskipTests -B
+
+# Stage 2: Run
+FROM eclipse-temurin:25-jre
+WORKDIR /app
+RUN groupadd -r appgroup && useradd -r -g appgroup appuser
+COPY --from=build /app/target/*.jar app.jar
+RUN chown appuser:appgroup app.jar
+USER appuser
+EXPOSE 8081
+ENTRYPOINT ["java", "-jar", "app.jar"]