自建了一个私库，在Kuboard里面密钥也配好了，docker login能够正常登录，在安装koboard机器的shell中用docker pull image是正常的，但就是无法在koboard中pull，报错如下，请教原因。
kubelet, node1
Failed to pull image "192.168.72.130:5000/demo/nginx:v1": rpc error: code = Unknown desc = failed to pull and unpack image "192.168.72.130:5000/demo/nginx:v1": failed to resolve reference "192.168.72.130:5000/demo/nginx:v1": failed to do request: Head https://192.168.72.130:5000/v2/demo/nginx/manifests/v1: x509: certificate signed by unknown authority
Normal
2021-02-10 15:44:13
kubelet, node1
Pulling image "192.168.72.130:5000/demo/nginx:v1"
