--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,7 +13,7 @@
   before_script:
     - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
   script:
-    - docker build -t $CI_REGISTRY_IMAGE:build .
+    - docker build -t $CI_REGISTRY_IMAGE:build -f build/Dockerfile .
     - docker push $CI_REGISTRY_IMAGE:build
 
 test-library: