fix(ci): install job: reverse cache path forcing thanks to modified Dockerfile (added user)

refs #500

.gitlab-ci.yml

@@ -77,7 +77,7 @@ install:
   script:
     - rm -rf node_modules
 # force electron_config_cache environment variable to solve Election installation error
-    - electron_config_cache=/tmp npm ci --force --unsafe-perm
+    - npm ci --force --unsafe-perm
 
 test:
   stage: test