demo-go-app's Deployment failed to pull: "dial tcp: lookup
harbor-core.harbor.svc.cluster.local on 127.0.0.53:53: server
misbehaving". docker push worked from the Jenkins build pod because
it has pod-network DNS (CoreDNS); pulling for a real Deployment
happens via containerd on the node itself, using the node's host-level
resolver, which has no route to *.svc.cluster.local at all. Switches
buildDocker.groovy's push target and dind-pod.yaml's
--insecure-registry flag to the Contour ingress hostname instead,
which resolves via normal public DNS (nip.io) from both pods and the
host.
Mukul Sharma
3ffa2d8444