52 lines
1.9 KiB
Docker
52 lines
1.9 KiB
Docker
# =====================================================================
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# 后端镜像：多阶段构建（Maven 编译 -> JRE 运行）
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# 构建：docker build -t lab-backend .
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# 运行：docker run -p 8080:8080 -e SPRING_PROFILES_ACTIVE=mariadb \
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# -e DB_HOST=host.docker.internal -e DB_USER=lab -e DB_PASSWORD=lab123456 lab-backend
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#
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# 国内加速：构建阶段使用阿里云 Maven 镜像（docker/maven-settings.xml）
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# 如需走官方中央仓库：docker build --build-arg MAVEN_MIRROR=false -t lab-backend .
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# =====================================================================
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# ---------- 构建阶段 ----------
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FROM maven:3.9-eclipse-temurin-21 AS build
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WORKDIR /build
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# MAVEN_MIRROR=false 时跳过阿里云镜像配置，使用默认中央仓库
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ARG MAVEN_MIRROR=true
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COPY docker/maven-settings.xml /tmp/maven-settings.xml
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RUN if [ "$MAVEN_MIRROR" = "true" ]; then \
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mkdir -p /root/.m2 && cp /tmp/maven-settings.xml /root/.m2/settings.xml; \
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fi
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# 先只复制 pom，利用 Docker 层缓存预热依赖
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COPY pom.xml .
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RUN mvn -B -q -Dmaven.test.skip=true dependency:go-offline
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# 再复制源码并打包（测试在 CI/本地执行，镜像构建跳过）
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COPY src ./src
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RUN mvn -B -q -Dmaven.test.skip=true package \
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&& cp target/*.jar /build/app.jar
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# ---------- 运行阶段 ----------
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FROM eclipse-temurin:21-jre
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WORKDIR /opt/app
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# 以非 root 用户运行
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RUN useradd -r -u 1001 appuser && chown -R appuser:appuser /opt/app
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USER appuser
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COPY --from=build --chown=appuser:appuser /build/app.jar /opt/app/app.jar
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ENV TZ=Asia/Shanghai \
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JAVA_OPTS="-Xms256m -Xmx512m" \
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SPRING_PROFILES_ACTIVE=dev
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EXPOSE 8080
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# 容器存活探针：用 bash 的 /dev/tcp 探测端口，避免安装额外工具
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HEALTHCHECK --interval=15s --timeout=5s --start-period=40s --retries=5 \
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CMD bash -c 'cat < /dev/null > /dev/tcp/127.0.0.1/8080' || exit 1
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ENTRYPOINT ["sh", "-c", "java $JAVA_OPTS -jar /opt/app/app.jar"]
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