Revert removal of var exports

We don't want to break backwards compatiblity.

gitlab-ci-template.yml

@@ -14,6 +14,8 @@ variables:
   image: quay.io/sheogorath/build-ah-engine:2.0.0
   before_script:
     - podman login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
+    - export VCS_REF="$CI_COMMIT_SHA"
+    - export VCS_URL="$CI_PROJECT_URL"
     - export BUILD_DATE="$(date --rfc-3339 ns)"
   script:
     - si-fix "${CI_REGISTRY_BUILD_DOCKERFILE:-./Dockerfile}"