Pull-Request-Checklist.md

@@ -55,3 +55,21 @@ The history looks more clean with this option
 * Ensure the milestone is set
 * Ensure the labels are set correctly
 
+
+## Common CI Build issues.
+
+Helping contributors to have a green CI is important.
+This section present some how-to to detect common problems
+
+### Shippable: ensure up to date
+
+TODO: describe it.
+
+### Shippable: generate all samples
+
+If the logs end with:
+```
+[ERROR] 5 out of 185 scripts failed.
+```
+
+Grep for `ERROR!! FAILED TO RUN` to see which scripts are failing.
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