Try node 10.

.gitlab-ci.yml

@@ -17,7 +17,7 @@ bundle_and_test:
   stage: bundle
   before_script:
     - apt install -y curl
-    - curl -sL https://deb.nodesource.com/setup_14.x | bash -
+    - curl -sL https://deb.nodesource.com/setup_10.x | bash -
     - apt install -y nodejs npm
     - apt install -y build-essential
     - npm install -g @apidevtools/swagger-cli