Minor CI optimization (don't fetch git repo in docker publishing job

where we don't use it)

(and cargo decided to update cfg-if version in random dependency)

.gitlab/CI/publish.gitlab-ci.yml

@@ -9,6 +9,8 @@
 
 docker:
   extends: .publish
+  variables:
+    GIT_STRATEGY: none
   image:
     name: gcr.io/kaniko-project/executor:debug
     entrypoint: [""]
@@ -33,6 +35,7 @@ gittag:
   extends: .publish
   rules:
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $CI_PIPELINE_SOURCE == "schedule"
+  # TODO: could use lighter image, since we don't need the cache or rust toolchain here
   image: registry.gitlab.com/veloren/veloren-docker-ci/cache/quality:${CACHE_IMAGE_TAG}
   dependencies: []
   tags: ["veloren/veloren", "publish", "trusted"]