chore: Log _build contents

.gitlab-ci.yml

@@ -99,6 +99,7 @@ build_image_for_commit:
       - _build/
       - deps/
   script:
+    - ls -la _build
     - docker login "https://${CI_REGISTRY}" -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD
     - docker pull $CI_REGISTRY_IMAGE:latest || true
     # This enables fast parallel builds
@@ -109,6 +110,7 @@ build_image_for_commit:
     - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
     # This copies the elixir build artifacts for deps and app so that we can cache them
     - docker cp `docker create $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA`:/root/app/_build/prod _build
+    - ls -la _build
 
 # If tests pass, tag the commit and update package versions
 deploy_to_tags: