diff --git a/doc/user/packages/composer_repository/index.md b/doc/user/packages/composer_repository/index.md
index 40fef13e59000d1d5fa1c99b16fe26e4fd129e7c..b2dac57afeff46537ed48f1fd144975c62096ad4 100644
--- a/doc/user/packages/composer_repository/index.md
+++ b/doc/user/packages/composer_repository/index.md
@@ -90,6 +90,7 @@ You can publish a Composer package to the Package Registry as part of your CI/CD
      - deploy
 
    deploy:
+     image: alpine
      stage: deploy
      script:
        - apk add curl