You must also have an NGINX Plus license. If you don't have one, you can sign up for a free 30-day trial.
Put the key and the certificate file of your license inside this folder.
Change the Makefile according to your environment.
If you're running Kubernetes in GCE, change the PREFIX variable to PREFIX = gcr.io/<project-id>/nginx-plus-ingress, where project-idis the ID of your GCE project.
Run the make command to build the image and upload it to the private Docker registry you use:
$ make
Requirements for your Kubernetes setup
DNS cluster addon must be enabled. It is enabled by default in deployments for most cloud providers.
NGINX Plus gets the IP address of a service or IP addresses of Endpoints for a headless service by resolving
the service DNS name.