ci(docker): push latest tag when creating a tagged image

Fixes aura#317

.gitlab-ci.yml

@@ -75,7 +75,7 @@ docker-push:
         then docker build -t $AURA_IMAGE_NAME -t $CI_REGISTRY_IMAGE:$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME .
         docker push $CI_REGISTRY_IMAGE:$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME
       else docker build -t $AURA_IMAGE_NAME -t $AURA_IMAGE_NAME:$CI_COMMIT_TAG .
-      docker push $AURA_IMAGE_NAME:$CI_COMMIT_TAG
+        docker push $AURA_IMAGE_NAME --all-tags
       fi
   rules:
     - *release-rules