Docker容器化Spring Boot应用的完整指南
Complete Guide to Dockerizing Spring Boot Applications
| iDev Tech | 2026-07-30T10:00:00
从Dockerfile编写到多阶段构建、再到Docker Compose编排，全面掌握Spring Boot应用的容器化部署。
From Dockerfile writing to multi-stage builds and Docker Compose orchestration — master containerized deployment of Spring Boot applications.
优化Dockerfile使用多阶段构建减小镜像体积：第一阶段使用maven镜像编译项目，第二阶段使用eclipse-temurin:17-jre-alpine作为运行时基础镜像。最终镜像大小可从800MB+缩减至200MB以下。分层JARSpring Boot 3.x支持分层JAR（Layered JAR），将应用分为dependencies、spring-boot-loader、snapshot-dependencies和application四层。利用Docker的层缓存机制，只有变更的层才需要重新构建。Docker Compose编排使用Docker Compose管理应用、MySQL、Redis等多个服务的依赖关系。通过depends_on和healthcheck确保服务按正确顺序启动。
Optimized DockerfileUse multi-stage builds to minimize image size: the first stage compiles with the maven image, the second uses eclipse-temurin:17-jre-alpine as the runtime base. Final image size can shrink from 800MB+ to under 200MB.Layered JARsSpring Boot 3.x supports layered JARs, splitting the application into dependencies, spring-boot-loader, snapshot-dependencies, and application layers. Leveraging Docker's layer caching, only changed layers need rebuilding.Docker Compose OrchestrationUse Docker Compose to manage dependencies between application, MySQL, Redis, and other services. Use depends_on and healthcheck to ensure services start in the correct order.