Use 'cytopia' validator

.gitlab-ci.yml

 ---
 variables:
     jsonlint_version: "latest"
+default:
+  image:
+    name: cytopia/jsonlint:$jsonlint_version
+    entrypoint: ["/bin/sh", "-c"]
 
 stages:
   - lint
 
 jsonlint:
   stage: lint
-  image: peterdavehello/jsonlint:$jsonlint_version
   only:
     changes:
-      - "**/*.json"
+      - "*/*/*.json"
+      - .gitlab-ci.yml
   script:
-    - find . -name "*.json" | xargs -n 1 jsonlint -q
+    - find . -name "*.json" | xargs -n 1 jsonlint
   tags:
-    - docker
\ No newline at end of file
+    - docker