Why is this change being made?

Remove deprecated Container Scanning variables with Docker references Deprecation Announcement

All Container Scanning variables that are prefixed by DOCKER_ in variable name are deprecated. This includes the DOCKER_IMAGE, DOCKER_PASSWORD, DOCKER_USER, and DOCKERFILE_PATH variables. Support for these variables will be removed in the GitLab 16.0 release. Use the new variable names CS_IMAGE, CS_REGISTRY_PASSWORD, CS_REGISTRY_USER, and CS_DOCKERFILE_PATH in place of the deprecated names.

What are the relevant issue numbers?

Remove deprecated Container Scanning variables ... (gitlab-org/gitlab#371840 - closed)

Edited Apr 20, 2023 by Adam Cohen