换镜像源
Ubuntu
RUN sed -i 's/archive.ubuntu.com/mirrors.tuna.tsinghua.edu.cn/g' /etc/apt/sources.list
Alpine
RUN sed -i 's/http:\/\/dl-cdn.alpinelinux.org/https:\/\/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories
移除软件包缓存
Ubuntu
RUN rm -vrf /var/lib/apt/lists/*
Alpine
RUN rm -vrf /var/cache/apk/* && \
rm -vrf /var/lib/apk/* && \
rm -vrf /etc/apk/cache/*