基于 AdoptOpenjdk 官方 Dockerfile 制作 jre8 镜像（修改字符集和时区）

$ cat alpine-jre-8.Dockerfile
# 基础镜像
FROM alpine:3.13

# 作者信息
MAINTAINER jiang_liheng <jiang_liheng@163.com>

# 字符集变量
ENV LANG='zh_CN.UTF-8' LANGUAGE='zh_CN:zh' LC_ALL='zh_CN.UTF-8'

# 时区变量
ENV TIME_ZONE Asia/Shanghai

# 安装依赖，设置时区
RUN apk add --no-cache tzdata --virtual .build-deps curl binutils zstd \
    && cp /usr/share/zoneinfo/${TIME_ZONE} /etc/localtime \
    && echo "${TIME_ZONE}" > /etc/timezone \
    && GLIBC_VER="2.31-r0" \
    && ALPINE_GLIBC_REPO="https://github.com/sgerrand/alpine-pkg-glibc/releases/download" \
    && GCC_LIBS_URL="https://archive.archlinux.org/packages/g/gcc-libs/gcc-libs-10.1.0-2-x86_64.pkg.tar.zst" \
    && GCC_LIBS_SHA256="f80320a03ff73e82271064e4f684cd58d7dbdb07aa06a2c4eea8e0f3c507c45c" \
    && ZLIB_URL="https://archive.archlinux.org/packages/z/zlib/zlib-1%3A1.2.11-3-x86_64.pkg.tar.xz" \
    && ZLIB_SHA256=17aede0b9f8baa789c5aa3f358fbf8c68a5f1228c5e6cba1a5dd34102ef4d4e5 \
    && curl -LfsS https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub -o /etc/apk/keys/sgerrand.rsa.pub \
    && SGERRAND_RSA_SHA256="823b54589c93b02497f1ba4dc622eaef9c813e6b0f0ebbb2f771e32adf9f4ef2" \
    && echo "${SGERRAND_RSA_SHA256} */etc/apk/keys/sgerrand.rsa.pub" | sha256sum -c - \
    && curl -LfsS ${ALPINE_GLIBC_REPO}/${GLIBC_VER}/glibc-${GLIBC_VER}.apk > /tmp/glibc-${GLIBC_VER}.apk \
    && apk add --no-cache /tmp/glibc-${GLIBC_VER}.apk \
    && curl -LfsS ${ALPINE_GLIBC_REPO}/${GLIBC_VER}/glibc-bin-${GLIBC_VER}.apk > /tmp/glibc-bin-${GLIBC_VER}.apk \
    && apk add --no-cache /tmp/glibc-bin-${GLIBC_VER}.apk \
    && curl -Ls ${ALPINE_GLIBC_REPO}/${GLIBC_VER}/glibc-i18n-${GLIBC_VER}.apk > /tmp/glibc-i18n-${GLIBC_VER}.apk \
    && apk add --no-cache /tmp/glibc-i18n-${GLIBC_VER}.apk \
    && /usr/glibc-compat/bin/localedef --force --inputfile POSIX --charmap UTF-8 "$LANG" || true \
    && echo "export LANG=$LANG" > /etc/profile.d/locale.sh \
    && curl -LfsS ${GCC_LIBS_URL} -o /tmp/gcc-libs.tar.zst \
    && echo "${GCC_LIBS_SHA256} */tmp/gcc-libs.tar.zst" | sha256sum -c - \
    && mkdir /tmp/gcc \
    && zstd -d /tmp/gcc-libs.tar.zst --output-dir-flat /tmp \
    && tar -xf /tmp/gcc-libs.tar -C /tmp/gcc \
    && mv /tmp/gcc/usr/lib/libgcc* /tmp/gcc/usr/lib/libstdc++* /usr/glibc-compat/lib \
    && strip /usr/glibc-compat/lib/libgcc_s.so.* /usr/glibc-compat/lib/libstdc++.so* \
    && curl -LfsS ${ZLIB_URL} -o /tmp/libz.tar.xz \
    && echo "${ZLIB_SHA256} */tmp/libz.tar.xz" | sha256sum -c - \
    && mkdir /tmp/libz \
    && tar -xf /tmp/libz.tar.xz -C /tmp/libz \
    && mv /tmp/libz/usr/lib/libz.so* /usr/glibc-compat/lib \
    && apk del --purge .build-deps glibc-i18n \
    && rm -rf /tmp/*.apk /tmp/gcc /tmp/gcc-libs.tar* /tmp/libz /tmp/libz.tar.xz /var/cache/apk/*

# java 版本
ENV JAVA_VERSION jdk8u292-b10

# 安装 jre
RUN set -eux; \
    apk add --no-cache --virtual .fetch-deps curl; \
    ARCH="$(apk --print-arch)"; \
    case "${ARCH}" in \
       amd64|x86_64) \
         ESUM='cad66f48f90167ed19030c71f8f0580702c43cce5ce5a0d76833f7a5ae7c402a'; \
         BINARY_URL='https://github.com/AdoptOpenJDK/openjdk8-binaries/releases/download/jdk8u292-b10/OpenJDK8U-jre_x64_linux_hotspot_8u292b10.tar.gz'; \
         ;; \
       *) \
         echo "Unsupported arch: ${ARCH}"; \
         exit 1; \
         ;; \
    esac; \
    curl -LfsSo /tmp/openjdk.tar.gz ${BINARY_URL}; \
    echo "${ESUM} */tmp/openjdk.tar.gz" | sha256sum -c -; \
    mkdir -p /opt/java/openjdk; \
    cd /opt/java/openjdk; \
    tar -xf /tmp/openjdk.tar.gz --strip-components=1; \
    apk del --purge .fetch-deps; \
    rm -rf /var/cache/apk/*; \
    rm -rf /tmp/openjdk.tar.gz;

# 设置环境变量
ENV JAVA_HOME=/opt/java/openjdk \
    PATH="/opt/java/openjdk/bin:$PATH"