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docker编译时报错，除标题外，还报如下信息
ERROR: failed to solve: node:20-alpine: failed to resolve source metadata for docker.io/library/node:20-alpine: failed to do request: Head "https://registry-1.docker.io/v2/library/node/manifests/20-alpine": dial tcp [2600:1f18:2148:bc01:571f:e759:a87a:2961]:443: connect: network is unreachable则更新 如下文件
vi /etc/resolv.conf在其中添加如下代码即可
nameserver 114.114.114.114然后可以通过 docker pull 该链接 来测试是否成功。
参见：
解决docker拉取镜像报错：Error response from daemon: Get “https://registry-1.docker.io/v2/“: dial tcp-CSDN博客
