AJout d'un .gitlab-ci.yml

.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
+  script:
+    - curl https://gest.unicaen.fr/packagist/update