Pages: copy game folder to public

.gitlab-ci.yml

 stages:
   - build
 
-before_script:
-  - npm install
-
-build:
-  image: node:latest
+pages:
+  image: alpine:latest
   stage: build
   script:
-    - npm run build
-    - cp -r ./dist/ ./public/
-
+    - cp -r ./game/ ./public/
   artifacts:
     paths:
      - public
+  only:
+    - main
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