correct syntax for ansible JSON params

.gitlab-ci.yml

@@ -84,6 +84,6 @@ deploy-webserver:
     - pip3.5 install ansible
     - cd ansible
     - whoami
-    - ansible-playbook -vvv -i ./hosts_deploy deploy.yaml --extra-vars {deploy_user_name:"jass", docker:false, repo_api_token:"$REPO_API_TOKEN"}
+    - ansible-playbook -vvv -i ./hosts_deploy deploy.yaml --extra-vars "@params-server.json"
   only:
   - master

params-server.json

+{
+    "deploy_user_name":"jass",
+    "docker":false,
+    "repo_api_token":"$REPO_API_TOKEN"
+}