Use version 7.9.3

.gitlab-ci.yml

@@ -19,7 +19,7 @@ push:
   stage: build
   script:
     - docker pull $CI_REGISTRY_IMAGE:latest || true
-    - docker build --pull --build-arg elasticsearch_version=7 -t $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA .
+    - docker build --pull --build-arg elasticsearch_version=7.9.3 -t $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA .
     - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
 
 # push latest on branch master