53 lines
1.6 KiB
Docker
53 lines
1.6 KiB
Docker
# 多阶段构建：构建阶段
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FROM maven:3.9-eclipse-temurin-21 AS builder
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WORKDIR /app
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# 复制 pom.xml 并下载依赖（利用Docker缓存）
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COPY pom.xml .
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RUN mvn dependency:go-offline -B || true
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# 复制源码
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COPY src ./src
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# 打包应用（跳过测试）
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RUN mvn clean package -DskipTests -B
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# 生产阶段
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FROM eclipse-temurin:21-jre
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WORKDIR /app
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# 安装时区支持和wget（健康检查）
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RUN apt-get update && \
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apt-get install -y --no-install-recommends \
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tzdata \
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wget \
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curl && \
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ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
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echo "Asia/Shanghai" > /etc/timezone && \
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apt-get clean && \
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rm -rf /var/lib/apt/lists/*
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# 创建非root用户（安全考虑）
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RUN groupadd -r spring && useradd -r -g spring spring
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# 创建必要的目录并设置权限
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RUN mkdir -p /app/uploads /app/temp /app/logs && \
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chown -R spring:spring /app
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# 从构建阶段复制JAR文件（项目生成的JAR文件名：demo-0.0.1-SNAPSHOT.jar）
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COPY --from=builder --chown=spring:spring /app/target/demo-0.0.1-SNAPSHOT.jar app.jar
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# 切换到非root用户
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USER spring
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EXPOSE 8080
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# JVM 参数优化（适配50人并发，建议2-4GB内存）
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ENV JAVA_OPTS="-Xmx2g -Xms1g -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -Djava.security.egd=file:/dev/./urandom"
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# 健康检查（检查应用是否响应，不依赖Actuator）
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HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
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CMD wget --no-verbose --tries=1 --spider http://localhost:8080/ || exit 1
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ENTRYPOINT ["sh", "-c", "java $JAVA_OPTS -jar app.jar"]
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