diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9f5442ae42..3cfb429c12 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,42 +1,42 @@
-# use the official gcc image, based on debian
-# can use verions as well, like gcc:5.2
-# see https://hub.docker.com/_/gcc/
-image: gcc
-
-cache:
-  key: apt-cache
-  paths:
-  - apt-cache/
-
-before_script:
-  - export APT_CACHE_DIR=`pwd`/apt-cache && mkdir -pv $APT_CACHE_DIR
-  - apt-get update -yq 
-  - apt-get -o dir::cache::archives="$APT_CACHE_DIR" install -y cmake libboost-filesystem-dev libboost-program-options-dev libboost-system-dev libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libswresample-dev libsdl2-dev libqt4-dev libopenal-dev libopenscenegraph-3.4-dev libunshield-dev libtinyxml-dev
-# - apt-get install -y libmygui-dev libbullet-dev  # to be updated to latest below because stretch is too old
-  - curl http://ftp.us.debian.org/debian/pool/main/b/bullet/libbullet-dev_2.87+dfsg-2_amd64.deb -o libbullet-dev_2.87+dfsg-2_amd64.deb
-  - curl http://ftp.us.debian.org/debian/pool/main/b/bullet/libbullet2.87_2.87+dfsg-2_amd64.deb -o libbullet2.87_2.87+dfsg-2_amd64.deb
-  - curl http://ftp.us.debian.org/debian/pool/main/m/mygui/libmygui.openglplatform0debian1v5_3.2.2+dfsg-1_amd64.deb -o libmygui.openglplatform0debian1v5_3.2.2+dfsg-1_amd64.deb
-  - curl http://ftp.us.debian.org/debian/pool/main/m/mygui/libmyguiengine3debian1v5_3.2.2+dfsg-1_amd64.deb -o libmyguiengine3debian1v5_3.2.2+dfsg-1_amd64.deb
-  - curl http://ftp.us.debian.org/debian/pool/main/m/mygui/libmygui-dev_3.2.2+dfsg-1_amd64.deb -o libmygui-dev_3.2.2+dfsg-1_amd64.deb
-  - dpkg --ignore-depends=libmygui.ogreplatform0debian1v5 -i *.deb 
-
-build:
-  stage: build
-  script: 
-    - cores_to_use=$((`nproc`-2)); if (( $cores_to_use < 1 )); then cores_to_use=1; fi
-    - mkdir build; cd build; cmake -DCMAKE_BUILD_TYPE=MinSizeRel ../
-    - make -j$cores_to_use
-    - DESTDIR=artifacts make install
-  artifacts:
-    paths:
-      - build/artifacts/
-  # depending on your build setup it's most likely a good idea to cache outputs to reduce the build time
+linux-stable:
+  image: gcc
+    
   cache:
+    key: apt-cache
     paths:
-      - "*.o"
+    - apt-cache/
+    
+  before_script:
+    - export APT_CACHE_DIR=`pwd`/apt-cache && mkdir -pv $APT_CACHE_DIR
+    - apt-get update -yq 
+    - apt-get -o dir::cache::archives="$APT_CACHE_DIR" install -y cmake libboost-filesystem-dev libboost-program-options-dev libboost-system-dev libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libswresample-dev libsdl2-dev libqt4-dev libopenal-dev libopenscenegraph-3.4-dev libunshield-dev libtinyxml-dev
+  # - apt-get install -y libmygui-dev libbullet-dev  # to be updated to latest below because stretch is too old
+    - curl http://ftp.us.debian.org/debian/pool/main/b/bullet/libbullet-dev_2.87+dfsg-2_amd64.deb -o libbullet-dev_2.87+dfsg-2_amd64.deb
+    - curl http://ftp.us.debian.org/debian/pool/main/b/bullet/libbullet2.87_2.87+dfsg-2_amd64.deb -o libbullet2.87_2.87+dfsg-2_amd64.deb
+    - curl http://ftp.us.debian.org/debian/pool/main/m/mygui/libmygui.openglplatform0debian1v5_3.2.2+dfsg-1_amd64.deb -o libmygui.openglplatform0debian1v5_3.2.2+dfsg-1_amd64.deb
+    - curl http://ftp.us.debian.org/debian/pool/main/m/mygui/libmyguiengine3debian1v5_3.2.2+dfsg-1_amd64.deb -o libmyguiengine3debian1v5_3.2.2+dfsg-1_amd64.deb
+    - curl http://ftp.us.debian.org/debian/pool/main/m/mygui/libmygui-dev_3.2.2+dfsg-1_amd64.deb -o libmygui-dev_3.2.2+dfsg-1_amd64.deb
+    - dpkg --ignore-depends=libmygui.ogreplatform0debian1v5 -i *.deb 
+    
+  build:
+    stage: build
+    script: 
+      - cores_to_use=$((`nproc`-2)); if (( $cores_to_use < 1 )); then cores_to_use=1; fi
+      - mkdir build; cd build; cmake -DCMAKE_BUILD_TYPE=MinSizeRel ../
+      - make -j$cores_to_use
+      - DESTDIR=artifacts make install
+    artifacts:
+      paths:
+        - build/artifacts/
+darwin:
+  build:
+    stage: build
+    script: 
+      - cores_to_use=$((`nproc`-2)); if (( $cores_to_use < 1 )); then cores_to_use=1; fi
+      - mkdir build; cd build; cmake -DCMAKE_BUILD_TYPE=MinSizeRel ../
+      - make -j$cores_to_use
+      - DESTDIR=artifacts make install
+    artifacts:
+      paths:
+        - build/artifacts/
 
-# TODO: run tests using the binary built before
-#test:
-#  stage: test
-#  script:
-#    - ls