ErrCannotPingDocker is returned when a ping to Docker with the Docker client fails.

ErrKubeConfigNotWriteable is returned when the file pointed to by KUBECONFIG cannot be created or written to.

ErrNoDockerClient is thrown when a Docker client cannot be obtained or cannot be pinged.

ErrNoDockerMachineClient is returned when a Docker client cannot be obtained from the given Docker machine.

ErrNoInsecureRegistryArgument is thrown when an --insecure-registry argument cannot be detected on the Docker daemon process.