try adding ci

.gitlab-ci.yml

+stages:
+  - build
+
+build:
+  stage: build
+  image: node:latest
+  script:
+    - npm i
+    - npm electron:build
+  artifacts:
+    paths:
+      - dist_electron/*.dmg
+      - dist_electron/*.exe
+      - dist_electron/*.AppImage
+      - dist_electron/*.snap
+  only:
+    - master