add dockerfile

Dockerfile

@@ -0,0 +1,12 @@
+FROM eclipse-temurin:24-jdk-alpine AS builder
+RUN mkdir -p /build
+WORKDIR /build
+COPY . /build/
+RUN ./mvnw clean package -DskipTests
+
+FROM eclipse-temurin:24-jre-alpine
+RUN mkdir -p /app
+WORKDIR /app
+COPY --from=builder /build/target/*.jar /app/app.jar
+EXPOSE 8080
+CMD [ "java", "-jar", "/app/app.jar" ]