Update Dockerfile to switch CentOS mirror source to Tencent Cloud and simplify sed commands
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FROM centos:centos7.9.2009
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# 切换 CentOS 镜像源为腾讯云源,更新包列表并安装依赖
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RUN sed -e "s|^mirrorlist=|#mirrorlist=|g" \
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-e "s|^#baseurl=http://mirror.centos.org/centos/\$releasever|baseurl=https://mirrors.tencent.com/centos-vault/7.9.2009|g" \
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-e "s|^#baseurl=http://mirror.centos.org/\$contentdir/\$releasever|baseurl=https://mirrors.tencent.com/centos-vault/7.9.2009|g" \
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-e "s|^#baseurl=http://mirror.centos.org/centos/\$releasever/extras|baseurl=https://mirrors.tencent.com/centos-vault/7.9.2009|g" \
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RUN sed -i.bak \
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-e 's|^mirrorlist=|#mirrorlist=|g' \
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-e 's|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tencent.com/centos-vault|g' \
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-i.bak \
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/etc/yum.repos.d/CentOS-*.repo \
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/etc/yum.repos.d/*.repo \
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&& yum clean all \
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&& yum makecache \
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&& yum update -y \
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