delay test-docker-compose to prevent CI runner overload as it is not needed by any other job

.gitlab-ci.yml

@@ -27,6 +27,8 @@ test-docker-compose:
   services:
     - registry-gitlab.pasteur.fr/dsi-tools/docker-images/docker:dind
   needs: []
+  when: delayed
+  start_in: 3 minutes
   stage: test
   script:
   - apk update && apk upgrade && apk add jq bash curl