ci: get base images on gitlab registry

.gitlab-ci.yml

 include:
+  - local: '.gitlab/ci/get_images.yml'
+    rules:
+      - if: $GET_IMAGES == "true"
   - local: '.gitlab/ci/lint.yml'

.gitlab/ci/get_images.yml

+get_images:
+  stage: .pre
+  image: 
+    name: gcr.io/go-containerregistry/crane:debug
+    entrypoint: [""]
+  script:
+    - |
+      crane auth login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+      while IFS= read -r image; do
+        if [ ! -z "${image}" ]; then
+          echo "📥 Download image: $image"
+          crane copy "${image}" "${CI_REGISTRY_IMAGE}/${image}"
+        fi
+      done < .gitlab/ci/images.txt

.gitlab/ci/images.txt

+alpine:3.21
+tianon/true

.gitlab/ci/lint.yml

 lint:
   stage: test
-  image: alpine:3.21
+  image: ${CI_REGISTRY_IMAGE}/alpine:3.21
   script:
-    - echo "🔎 Lint" 
+    - echo "🔎 Lint"