OZG-7121 gitlab: Use container registry

.gitlab-ci.yml

@@ -120,10 +120,8 @@ push-snapshot-image-gitlab:
   script:
     - export IMAGE_TAGS="${CI_REGISTRY_IMAGE}:${PROJECT_VERSION}-main,${CI_REGISTRY_IMAGE}:${PROJECT_VERSION}-main-${CI_COMMIT_SHORT_SHA},${CI_REGISTRY_IMAGE}:snapshot-latest"
     - mvn deploy -Pgitlab-deploy $MAVEN_DEPLOY_CLI_OPTS $MAVEN_CLI_OPTS
-  # only:
-  #   - main
-  rules:
-    - when: never  # Step disabled until gitlab container registry works
+  only:
+    - main
 
 push-snapshot-image-nexus:
   stage: publish
@@ -162,7 +160,6 @@ push-release-image-gitlab:
     - mvn deploy -Pgitlab-deploy $MAVEN_DEPLOY_CLI_OPTS $MAVEN_CLI_OPTS
   rules:
     - if: $CI_COMMIT_TAG
-      when: never  # Step disabled until gitlab container registry works
 
 push-release-image-nexus:
   stage: publish