修復阿里雲docker中certificate signed by unknown authority親測有效

解決Error response from daemon: Get https://registry-1.docker.io/v2/: x509: certificate signed by unknown authority

阿里雲服務器安裝的docker一直報錯，后來查閱老外的記錄解決了問題。過程如下。

安裝 ca-certificates

yum update ca-certificates || sudo yum -y reinstall ca-certificates

創建目錄 /etc/docker/certs.d

mkdir -p /etc/docker/certs.d/registry-1.docker.io:443 

復制 SSL 證書

mv www.spinach.ink.pem /etc/docker/certs.d/registry-1.docker.io:443/server.crt

mv www.spinach.ink.key /etc/docker/certs.d/registry-1.docker.io:443/server.key

重啟 Docker

systemctl restart docker

此時重啟docker，基本上就修復了。