Lookup registry-1.docker.io on 192.168.1.1:53: no such host

General
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1

docker: Get “https://registry-1.docker.io/v2/portainer/portainer-ce/manifests/sha256:91abd61954011f205bc3716cc55124d46a046800e877c08c234bae381d970f31”: dial tcp: lookup registry-1.docker.io on 192.168.1.1:53: no such host.

2

It seems your system is configured to use IP 192.168.1.1 for DNS to resolve hostnames to IP. But that node/device is not available.