containerd use harbor, configure CA certificate

[jan-bar]

1. generate certificate: https://goharbor.io/docs/2.5.0/install-config/configure-https/
2. copy the certificate: scp ca.crt root@nodeIp:/usr/local/share/ca-certificates/harbor.crt (sealos3.0), The directory does not exist and needs to be
   created manually. scp ca.crt root@nodeIp:/etc/ssl/certs/harbor.crt (sealos4.0)
3. restart containerd : systemctl restart containerd.service
4. k8a master create secrets: kubectl create secret docker-registry janbar-harbor --docker-server=x.x.x.x --docker-username=admin --docker-password=Harbor12345
5. can be used directly

apiVersion: v1
kind: Pod
metadata:
  name: "my-nginx"
  namespace: default
  labels:
    app: "my-nginx"
spec:
  imagePullSecrets:
    - name: janbar-harbor
  containers:
    - image: x.x.x.x/nginx:alpine
      name: my-container-01
      imagePullPolicy: Always

Solution source: haminhcong/k8s-til#17, Solution 3

[cuisongliu]

@jan-bar need support https secret ???

[jan-bar]

@cuisongliu k8s use https by default，I didn't find a solution to change the default http. But the method I'm using now works fine.