Defining the list of images to pull

The Image Puller can pre-pull most images, including scratch images such as che-machine-exec. However, images that mount volumes in the Dockerfile, such as traefik, are not supported for pre-pulling on OpenShift 3.11.

Procedure
  1. Gather a list of relevant container images to pull by navigating to the https://<che_fqdn>/plugin-registry/v3/external_images.txt URL.

  2. Determine images from the list for pre-pulling. For faster workspace startup times, consider pulling workspace related images such as universal-developer-image, che-code, and che-gateway.