Update .gitlab-ci.yml

bugfix 2

.gitlab-ci.yml

@@ -23,7 +23,7 @@ build-docker:
     - docker pull ${CONTAINER_TEST_IMAGE} || true
     - docker build --cache-from ${CONTAINER_TEST_IMAGE} --tag ${CI_REGISTRY_IMAGE}:${CI_COMMIT_SHA} --tag ${CONTAINER_TEST_IMAGE}{ .}
     - docker push ${CI_REGISTRY_IMAGE}:${CI_COMMIT_SHA}
-    - {docker} push ${CONTAINER_TEST_IMAGE}
+    - docker push ${CONTAINER_TEST_IMAGE}
   only:
     - master
   only: