Update ci config

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: docker:latest
+image: docker:dind
 
 services:
 - docker:dind
@@ -6,10 +6,9 @@ services:
 pages:
   stage: deploy
   script:
-  - mkdir public
-  - echo 'Hello World!' > public/index.html
+  - docker run --rm -it -v `pwd`:/build composer/satis
   artifacts:
     paths:
-    - public
+    - output
   only:
   -  master