feat(deploy): Dockerfile 改为多阶段构建（薄 jar + start.sh）

Dockerfile

@@ -1,18 +1,27 @@
-# Build stage: uses Maven + JDK 17 (Alpine) to compile and package the application.
+# 构建阶段：Maven + JDK 17 编译，生成薄 jar 及依赖
 FROM maven:3.9-eclipse-temurin-17-alpine AS builder
 WORKDIR /app
 
-# Copy pom.xml first to leverage Docker layer caching for dependency downloads.
+# 优先复制 pom.xml 利用 Docker 层缓存（依赖不变时跳过 go-offline）
 COPY pom.xml .
 RUN mvn dependency:go-offline -q
 
-# Copy source and build the fat JAR, skipping tests.
 COPY src ./src
 RUN mvn clean package -DskipTests -q
 
-# Runtime stage: slim JRE-only image for a smaller production footprint.
+# 运行阶段：仅含 JRE 的精简镜像
 FROM eclipse-temurin:17-jre-alpine
 WORKDIR /app
-COPY --from=builder /app/target/*.jar app.jar
+
+# 复制部署结构：bin/ libs/ etc/
+COPY --from=builder /app/src/main/scripts/start.sh        bin/start.sh
+COPY --from=builder /app/target/libs/                      libs/
+COPY --from=builder /app/src/main/resources/application.yml etc/application.yml
+COPY --from=builder /app/src/main/resources/logback.xml    etc/logback.xml
+
+RUN mkdir -p logs && chmod +x bin/start.sh
+
 EXPOSE 8080
-ENTRYPOINT ["java", "-jar", "app.jar"]
+
+# start.sh 检测到 /.dockerenv 后以 exec 前台方式运行
+ENTRYPOINT ["bin/start.sh"]