Docker Portainer with errors

Troubleshooting
7

There is no issue running nslookup for registry-1.docker.io
Why wouldn’t it work?

root@DietPi:~# nslookup
> server 192.168.1.1
Default server: 192.168.1.1
Address: 192.168.1.1#53
> registry-1.docker.io
Server:         192.168.1.1
Address:        192.168.1.1#53

Non-authoritative answer:
Name:   registry-1.docker.io
Address: 44.205.64.79
Name:   registry-1.docker.io
Address: 3.216.34.172
Name:   registry-1.docker.io
Address: 34.205.13.154