includes/images.yaml: Add comments
Add comments about how KOKKURI_DOTENV_PATH is populated and what the usual value of the variable is.
How to register an account on GitLab. To prevent spam, new accounts are locked until approved by an admin or the approver bot. You can also file an unlock request to expedite access.
Support: mw:GitLab, how to host a project on GitLab, #wikimedia-gitlab on libera.chat, #GitLab on Phabricator.
Add comments about how KOKKURI_DOTENV_PATH is populated and what the usual value of the variable is.