# 使用 RockyLinux 8 最小化镜像作为基础
FROM rockylinux:8.9-minimal

# 维护者信息
LABEL maintainer="XXXX团队" \
      description="Minimal JDK 17.0.16 on RockyLinux 8 with Chinese support" \
      version="1.0" \
      java.version="17.0.16"

# 设置环境变量
ENV LANG zh_CN.UTF-8
ENV LC_ALL zh_CN.UTF-8
ENV JAVA_HOME /opt/jdk-17.0.16
ENV PATH $JAVA_HOME/bin:$PATH
ENV CLASSPATH .:$JAVA_HOME/lib/jrt-fs.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

# 一次性安装所有依赖并设置环境
RUN set -eux && \
    # 配置国内镜像源加速
    sed -e 's|^mirrorlist=|#mirrorlist=|g' \
        -e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl=https://mirrors.aliyun.com/rockylinux|g' \
        -i.bak \
        /etc/yum.repos.d/*.repo && \
    \
    # 安装最小必要包（使用microdnf更轻量）
    microdnf update -y && \
    microdnf install -y \
        fontconfig \
        glibc-langpack-zh \
        glibc-locale-source \
        glibc-common \
        && \
    \
    # 设置中文语言环境
    localedef -c -f UTF-8 -i zh_CN zh_CN.utf8 && \
    echo 'LANG="zh_CN.UTF-8"' > /etc/locale.conf && \
    echo 'LC_ALL="zh_CN.UTF-8"' >> /etc/locale.conf && \
    \
    # 设置时区
    ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
    echo 'Asia/Shanghai' > /etc/timezone && \
    \
    # 创建字体目录
    mkdir -p /usr/share/fonts/ && \
    chmod 755 /usr/share/fonts/ && \
    \
    # 清理缓存
    microdnf clean all && \
    rm -rf /var/cache/yum /var/tmp/* /tmp/*

# 复制最小字体文件（只复制必需的中文字体）
COPY ./fonts/simsun.ttf /usr/share/fonts/
# 可选：如果需要更多字体支持，可以添加其他字体
# COPY ./fonts/msyh.ttc /usr/share/fonts/

# 更新字体缓存
RUN fc-cache -fv && rm -rf /var/cache/fontconfig/*

# 添加并精简 JDK
ADD jdk-17.0.16_linux-x64_bin.tar.gz /opt/

# 精简JDK：删除不必要的文件
RUN set -eux && \
    # 重命名JDK目录
    mv /opt/jdk-17.0.16 /opt/jdk-17.0.16-original && \
    \
    # 创建新的精简JDK目录
    mkdir -p /opt/jdk-17.0.16 && \
    \
    # 保留必要的目录和文件
    cp -r /opt/jdk-17.0.16-original/bin /opt/jdk-17.0.16/ && \
    cp -r /opt/jdk-17.0.16-original/lib /opt/jdk-17.0.16/ && \
    cp -r /opt/jdk-17.0.16-original/conf /opt/jdk-17.0.16/ && \
    cp -r /opt/jdk-17.0.16-original/include /opt/jdk-17.0.16/ && \
    \
    # 删除调试文件（使用通配符）
    rm -rf  /opt/jdk-17.0.16/lib/*.diz \
            /opt/jdk-17.0.16/lib/*/*.diz \
            /opt/jdk-17.0.16/lib/*/*/*.diz \
            /opt/jdk-17.0.16/lib/*.debuginfo \
            /opt/jdk-17.0.16/lib/*/*.debuginfo \
            /opt/jdk-17.0.16/lib/*/*/*.debuginfo \
            /opt/jdk-17.0.16/lib/*.pdb \
            /opt/jdk-17.0.16/lib/*/*.pdb \
            /opt/jdk-17.0.16/lib/*/*/*.pdb && \
    \
    # 删除不必要的模块和文件
    rm -rf /opt/jdk-17.0.16/lib/src.zip \
           /opt/jdk-17.0.16/lib/missioncontrol \
           /opt/jdk-17.0.16/lib/visualvm \
           /opt/jdk-17.0.16/lib/jfr \
           /opt/jdk-17.0.16/lib/security/cacerts.dummy \
           \
           # 删除演示和样例
           /opt/jdk-17.0.16-original/demo \
           /opt/jdk-17.0.16-original/sample \
           /opt/jdk-17.0.16-original/man \
           \
           # 删除文档
           /opt/jdk-17.0.16-original/legal \
           /opt/jdk-17.0.16-original/README.md \
           /opt/jdk-17.0.16-original/release && \
    \
    # 删除原始JDK目录
    rm -rf /opt/jdk-17.0.16-original && \
    \
    # 设置权限
    chmod -R 755 /opt/jdk-17.0.16 && \
    chown -R root:root /opt/jdk-17.0.16 &&\
    \
    # 验证JDK安装
    /opt/jdk-17.0.16/bin/java -version && \
    /opt/jdk-17.0.16/bin/javac -version

# 创建非root用户
RUN set -eux && \
    groupadd -r esxi -g 1000 && \
    useradd -r -g esxi -u 1000 -m -d /app -s /bin/bash esxi && \
    chown -R esxi:esxi /app

# 清理临时文件
RUN rm -rf /tmp/* /var/tmp/* /var/log/*.log /*.repo.bak

# 设置工作目录
WORKDIR /opt/apps

# 切换到非root用户
#USER esxi

# # 健康检查
# HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
#     CMD java -version || exit 1

# 默认命令
CMD ["java", "-version"]