alpine 设置时区，dockfile里面配置

1. 方法一

RUN apk update && apk add tzdata 
RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime 
RUN echo "Asia/Shanghai" > /etc/timezone
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2. 方法二

RUN apk update && apk add tzdata 
RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime 
RUN echo "Asia/Shanghai" > /etc/timezone
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如果想在启动容器时指定时区，可以挂载本地的时区文件

-v /etc/localtime:/etc/localtime -v /etc/timezone:/etc/timezone
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参考： https://blog.csdn.net/cljdsc/article/details/117266636