feat(devcontainer): add enhanced Maven development environment with Java 21, Bun, and SSH support

- Add Docker Compose configuration for Maven + Java 21 development container
- Include SSH server support for remote development (Zed editor compatible)
- Install Bun package manager and opencode-ai for enhanced development workflow
- Provide Makefile with commands for build, up, down, restart, logs, shell, ssh, and clean
- Add .env.example template for configurable ports and paths
- Include .gitignore for Java/Maven artifacts and IDE files
- Configure USTC mirrors for faster package installation
- Support persistent volume mounting for root user configuration (.ssh, .m2 cache)

java-maven/vibe-enhance-version/Containerfile

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+FROM maven:3.9-eclipse-temurin-21
+
+# 1. 优化 APT源 (保持你原有的逻辑，但增加了错误处理的安全性)
+# 注意：eclipse-temurin-21 基于 Ubuntu，sources 路径正确
+RUN sed -i 's/security.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.list.d/ubuntu.sources && \
+    sed -i 's@//.*archive.ubuntu.com@//mirrors.ustc.edu.cn@g' /etc/apt/sources.list.d/ubuntu.sources && \
+    sed -i 's/http:/https:/g' /etc/apt/sources.list.d/ubuntu.sources
+
+# 2. 安装基础工具 + SSH Server
+#添加 openssh-server, locales, sudo 等开发常用包
+RUN apt-get update && \
+    apt-get install -y \
+    git curl vim ripgrep unzip netcat-openbsd bash-completion \
+    openssh-server locales sudo wget && \
+    # 清理缓存以减小镜像体积
+    rm -rf /var/lib/apt/lists/*
+
+# ============================
+# 2. 安装 Bun 和 Opencode
+# ============================
+# [关键] 设置 BUN_INSTALL 到 /opt 目录，防止被 /root 挂载卷覆盖
+ENV BUN_INSTALL="/opt/bun"
+ENV PATH="$BUN_INSTALL/bin:$PATH"
+
+# 安装 Bun
+RUN curl -fsSL https://bun.sh/install | bash
+
+# 使用 Bun 安装 opencode
+RUN bun install -g opencode-ai
+
+
+
+
+# 3. 配置 SSH 服务
+RUN mkdir /var/run/sshd && \
+    # 允许 root 登录 (Zed 需要连接用户)
+    sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config && \
+    # 修复 SSH 登录后的环境变量问题
+    sed -i 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' /etc/pam.d/sshd
+
+
+# 5. 安装 Opencode (Vibe Coding 工具)
+# 假设 Opencode 是一个可以通过 curl 下载的二进制文件。
+# 请将下方的 URL 替换为 Opencode 的真实下载链接。
+# 如果 Opencode 是 npm 包，则需要先安装 nodejs。
+# 这里演示二进制安装模式：
+# RUN curl -L "https://path/to/opencode-linux-x64" -o /usr/local/bin/opencode && \
+#     chmod +x /usr/local/bin/opencode
+
+# 6. 设置工作目录
+WORKDIR /workspace
+
+# 7. 配置容器启动命令
+# 启动 SSH 服务并挂起容器
+CMD ["/bin/sh", "-c", "/usr/sbin/sshd -D"]