diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 06a55c3c682a17f86024491b158a35e9134a9157..c1f41a3e655816a6865508d7545df98915fd6872 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,3 +1,15 @@
+# ----------------------
+# diva_evaluation_cli CI
+# ----------------------
+
+# Here is a non-exhaustive list of what could be added to this file:
+# - Improve existing steps
+#   - Could be interesting to use larger files
+# - Add pip only version of simulated execution pipeline
+# - Add exec entry point step
+# - Add baseline testing
+# - ...
+
 variables:
   # python dependencies
   CONDA_ENVS: ".conda"
@@ -28,8 +40,17 @@ reject:other:branches:
   stage: check-branch
   script:
     - if [[ $CI_PIPELINE_SOURCE != "push" ]];then exit 1; fi
+    # It only accepts:
+    # - master
+    # - baseline_master
+    # - placebo
+    # - /dev_*/
+    # It will refuse:
+    # - dev_placebo
+    # - dev_baseline
     - if [[ $CI_COMMIT_BRANCH =~ ^(master|baseline_master|placebo|(dev_.*))$ ]] && [[ ! $CI_COMMIT_BRANCH =~ ^dev_(placebo|baseline)$ ]];then exit 0; else echo "Branch name is invalid."; exit 1; fi
 
+# This is going to install and run the placebo through execution steps.
 master:conda:oneshot:
   stage: conda-test
   rules: