[root@localhost d1]# docker build -t hello_dockerwb .Sending build context to Docker daemon 2.048 kBStep 1/3 : FROM alpine:latestTrying to pull repository docker.io/library/alpine ... latest: Pulling from docker.io/library/alpineno supported platform found in manifest list
你的这个镜像alpine:latest目前是从docker.io上拉取的，建议在运行指令前加上这么一行CDN加速镜像：
RUN sed -i 's/archive.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.list