diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 131f5bf0bb62f5862b3565b5cb8199dda8791120..c44e735f1fc0af0f13bf51c6103b02747a139981 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -31,6 +31,7 @@ stages:
 img_cache:
   stage: singularity
   script:
+    - export -p | grep SINGULARITY_CACHEDIR
     - >
       for container in `cat nextflow.config | grep -oP "container = \K.*" | tr -d "'" | sort | uniq`; do
         singularity pull 'docker://'${container}