1 files changed, 4 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index b5c8269..054e75b 100644
--- a/Makefile
+++ b/Makefile
@@ -42,5 +42,9 @@ test/docker/%: DO
 		docker-compose run --rm test && \
 		docker-compose down -v
 
+# Xenial has bash 4.3, which doesn't support inherit_errexit, which is a good
+# thing to test against.
+#
+# Keep the list repositories synced with the GitHub actions workflow.
 .PHONY: test/docker
 test/docker: test/docker/xenial test/docker/focal