所有节点都能docker login登录成功，kubesphere中配置了密钥，但却找不到镜像
前端接口返回数据如下：
Get https://10.168.30.23:30003/v2/library/nginx/manifests/latest: x509: certificate signed by unknown authority
ks-apiserver容器日志如下：
E0126 13:58:33.832643 1 utils.go:39] /home/runner/work/kubesphere/kubesphere/pkg/kapis/resources/v1alpha2/handler.go:331 Get https://10.168.30.23:30003/v2/library/nginx/manifests/latest: x509: certificate signed by unknown authority
论坛都说是ks-apiserver没有ca证书，但不知道具体怎么操作？
