diff --git a/README.md b/README.md
index 1f01624..efe2bcf 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,8 @@ This project's static Pages are built by [GitLab CI][ci], following the steps
 defined in [`.gitlab-ci.yml`](.gitlab-ci.yml):
 
 ```
+image: alpine:latest
+
 pages:
   stage: deploy
   script: