diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d17cd1b6cf7ca5242e7d525b1cfed60b1828988b..5e8667fc3de83e5964464f39f0041593ccb9bef3 100755
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -34,12 +34,12 @@ create_jupytermachine_version:
       for image in "${IMAGES[@]}"; do
         # Read the existing base image from the Dockerfile
         OLD_BASE_IMAGE=$(grep -E '^\s*FROM\s+.*' Dockerfile | awk '{print $2}');
-        echo $OLD_BASE_IMAGE
+        echo $OLD_BASE_IMAGE;
         # Replace "basic_jupytermachine" with the new base image name
-        NEW_BASE_IMAGE=$(IMAGE_PREFIX/etp_${image});
-        echo $NEW_BASE_IMAGE
+        NEW_BASE_IMAGE=$IMAGE_PREFIX/etp_$image;
+        echo $NEW_BASE_IMAGE;
         sed -i "s/$OLD_BASE_IMAGE/$NEW_BASE_IMAGE/" "Dockerfile";
-        cat Dockerfile
+        cat Dockerfile;
         # Build the second version of the container
         docker build -t "$IMAGE_PREFIX/jupytermachine_${image}" -f "Dockerfile" .;
         docker push "$IMAGE_PREFIX/jupytermachine_${image}";