use before script instead of build

.gitlab-ci.yml

@@ -5,14 +5,9 @@ stages:
     - test
     - deploy
 
-
-installSetupTools:
-    stage: build
-    script: pip install setuptools
-
-installPackage:
-    stage: build
-    script: pip install -e .
+before_script:
+    - pip install setuptools
+    - pip install -e .
 
 simpleTest:
     stage: test