Merge branch 'git-pipeline' into 'dev'

Update gitlab pipeline

See merge request morningstar/Arcturus-Community!138

.gitlab-ci.yml

@@ -2,20 +2,17 @@ image: maven:latest
 
 stages:
   - build
-  - deploy
-
-cache:
-  paths:
-    - target/
 
 build:
   stage: build
   script:
     - mvn package
   only:
-    - dev
-    - master
+    changes:
+      - src/**/*
+      - pom.xml
   artifacts:
-      paths:
+    expire_in: 2 weeks
+    paths:
       - target/Habbo-*.jar