You can use your docker images hosted on https://hub.docker.com/.
You can use your public images without the need to set any configuration. In order to use private docker images hosted on docker hub, you need to set access credentials.
You can use the
privateRegistries section to set your docker hub credentials:
privateRegistries: - "my_username:[email protected]://index.docker.io/v1/"
privateRegistries: - host: "https://index.docker.io/v1/" user: "myname" password: "mypassword"