kubectl create secret docker-registry regcred \
  --docker-server=private-registry.io \
  --docker-usernamne=registry-user    \
  --docker-password=registry-password    \
  --docker-email=user@domain.com

apiVersion: v1
kind: Pod
metadata:
  name: nginx-pod
spec:
  containers:
  - name: nginx-pod
    image: private-registry.io/apps/nginx-custom
  imagePullSecrets:
  - name: regcred