更新 构建JDK镜像.md

构建JDK镜像.md

@@ -24,4 +24,51 @@ RUN echo "deb https://mirrors.aliyun.com/debian/ bullseye main contrib non-free"
     apt-get install -y git && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
+```
+
+## 使用本地 JDK 与 Maven 构建
+
+要先下载 OpenJDK 和 Maven，与 Dockerfile 同级目录，分别命名为 jdk-21 和 mvn-3，目录结构：
+
+- Dockerfile
+- jdk-21/
+- mvn-3/
+
+```shell
+FROM ubuntu:22.04
+
+ENV DEBIAN_FRONTEND=noninteractive \
+    TZ=Asia/Shanghai
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        locales \
+        tzdata \
+        ca-certificates \
+        git && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN locale-gen zh_CN.UTF-8 en_US.UTF-8
+
+ENV LANG=zh_CN.UTF-8 \
+    LANGUAGE=zh_CN:zh \
+    LC_ALL=zh_CN.UTF-8
+
+RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
+    dpkg-reconfigure -f noninteractive tzdata
+
+WORKDIR /opt
+
+COPY jdk-21 jdk21
+COPY mvn-3 mvn
+
+ENV JAVA_HOME=/opt/jdk21 \
+    MAVEN_HOME=/opt/mvn \
+    PATH="/opt/jdk21/bin:/opt/mvn/bin:${PATH}"
+```
+
+执行命令开始构建
+
+```shell
+docker build -t ubuntu-jdk-21 .
 ```