diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f378d23f0d4a7d4c50448e42ee0f7452339fb86a..f8400b5e993363e0fd0d2efe579dbaf957353a9c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,8 +24,8 @@ variables:
   CPPLIB_TESTENV_IMAGE_SUFFIX: $CI_COMMIT_REF_NAME
   CPPLIB_REPO_PATH: caosdb/src/caosdb-cpplib
   CPPLIB_TESTENV_IMAGE_TAG: ${CPPLIB_REPO_PATH}/testenv:${CPPLIB_IMAGE_SUFFIX}
-  CPPLIB_REGISTRY_IMAGE: ${CI_REGISTRY}/${CPPLIB_IMAGE_TAG}
-  CPPLIB_IMAGE_CACHE: ${CPPLIB_IMAGE_TAG}.tar
+  CPPLIB_REGISTRY_IMAGE: ${CI_REGISTRY}/${CPPLIB_TESTENV_IMAGE_TAG}
+  CPPLIB_IMAGE_CACHE: ${CPPLIB_TESTENV_IMAGE_TAG}.tar
 
   CPPINTTEST_REPO: https://gitlab.indiscale.com/api/v4/projects/111
   CPPINTTEST_PIPELINE: $CPPINTTEST_REPO/trigger/pipeline
@@ -65,10 +65,10 @@ build-testenv:
       # use here general latest or specific branch latest...
     - docker pull $CPPLIB_REGISTRY_IMAGE|| true
     - docker build 
-      -f .docker/Dockerfile
+      --file .docker/Dockerfile
       --pull
       --cache-from $CPPLIB_REGISTRY_IMAGE
-      -t $CPPLIB_REGISTRY_IMAGE .
+      --tag $CPPLIB_REGISTRY_IMAGE .
     - docker push $CPPLIB_REGISTRY_IMAGE
 
 # formatting with clang-format