Add images used in internal samples as RELATED_IMAGES variables into the che-operator container

[svor]

Is your task related to a problem? Please describe

Currently it's hard to collect all related images that should be pre-pull

Describe the solution you'd like

All images that used in editors' definitions and internal samples' devfiles should be added as environment variables into the operator container to pre-pull them.

Currently we only have env variables that describe related images used in editors: RELATED_IMAGE_editor_definition_che_code_latest_che_code_runtime_description=registry.redhat.io/devspaces/udi-rhel8@sha256:9199796c9dd82a16ebb2c4ff8d06b9727f392eb93eb7ffa2974ad6c16e3d8e5d

Need similar variables for images used in samples:
RELATED_IMAGE_sample_devfile_ansible_devspaces_demo=ghcr.io/ansible/ansible-workspace-env-reference@sha256:03d7f0fe6caaae62ff2266906b63d67ebd9cf6e4a056c7c0a0c1320e6cfbebce

Describe alternatives you've considered

No response

Additional context

No response

[tolusha]

To find out the list of samples:
http://che-dashboard.eclipse-che.svc:8080/dashboard/api/airgap-sample

To find out the list of editors:
http://che-dashboard.eclipse-che.svc.cluster.local:8080/dashboard/api/editors

[ibuziuk]

@tolusha is it documented by any chance?

[tolusha]

Operators should:

1. reads the list of samples and editors from the dashboard using internal urls, parses and grabs images.
2. uses those images to configure imagepuller operator
3. stores them in /tmp/external_images.txt file

Document how to read that file by admin

[ibuziuk]

@tolusha looks like there is some mismatch with images based on:

sh-5.1# env | grep ^RELATED_IMAGE_editor_definition_
RELATED_IMAGE_editor_definition_che_idea_latest_idea_rhel8_injector=registry.redhat.io/devspaces/idea-rhel8@sha256:0286c708c10dc4740f3e7c70f79b7c6976d63e069ee4a4380004bdbe77ff7e05
RELATED_IMAGE_editor_definition_che_code_latest_che_code_injector=registry.redhat.io/devspaces/code-rhel8@sha256:007bc86b63ddc948be828536bc0a6b7dbaeee3d272287f62f2336009e7b9c6a0
RELATED_IMAGE_editor_definition_che_code_latest_che_code_runtime_description=registry.redhat.io/devspaces/udi-rhel8@sha256:9199796c9dd82a16ebb2c4ff8d06b9727f392eb93eb7ffa2974ad6c16e3d8e5d
RELATED_IMAGE_editor_definition_che_idea_latest_idea_rhel8=registry.redhat.io/devspaces/udi-rhel8@sha256:9199796c9dd82a16ebb2c4ff8d06b9727f392eb93eb7ffa2974ad6c16e3d8e5d

last idea image point to UDI for some reason

[ibuziuk]

N.B. api/airgap-sample does not provide the image information

[tolusha]

That's because upstream doesn't have any samples