参考地址：containerd/config.md at main · containerd/containerd · GitHub

1. 修改Config.toml文件

[plugins."io.containerd.grpc.v1.cri".registry]
      config_path = "/etc/containerd/certs.d"  # 镜像地址配置文件

      [plugins."io.containerd.grpc.v1.cri".registry.auths]

      [plugins."io.containerd.grpc.v1.cri".registry.configs]

      [plugins."io.containerd.grpc.v1.cri".registry.headers]

      [plugins."io.containerd.grpc.v1.cri".registry.mirrors]

2. 创建相应目录

mkdir /etc/containerd/certs.d/docker.io -pv

3. 配置加速

cat > /etc/containerd/certs.d/docker.io/hosts.toml << EOF
server = "https://docker.io"
[host."https://xxxxxxxx.mirror.aliyuncs.com"]
  capabilities = ["pull", "resolve"]
EOF

4. 重启Containerd

systemctl restart containerd

5. 重新拉取镜像

ctr i pull docker.io/library/mysql:latest