gitlab CI modifié

.gitlab-ci.yml

-image: registre.unicaen.fr:5000/unicaen-dev-php7.3-apache
-
 stages:
   - publish
 
-cache:
-  key: ${CI_COMMIT_REF_SLUG}
-  paths:
-  - vendor/
-
 update-satis:
   stage: publish
+  image: python:3.9
   script:
+    - apt-get update && apt-get -y upgrade && apt-get -y install curl
     - curl https://gest.unicaen.fr/packagist/update
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