updated ci config, test using different images

.gitlab-ci.yml

@@ -1,25 +1,30 @@
-image: rduweston/ubuntu-ci:18.04
-
-build:
-  stage: build
+## Build and test as standard C++ package
+cpp-build:
+  stage: cpp-build
+  image: rduweston/ubuntu-ci:18.04
   before_script:
     - apt update && apt -y install libasio-dev
   script:
     - mkdir build && cd build
-    - cmake -DBUILD_TESTS=ON ..
+    - cmake ..
     - cmake --build . && cpack
-  artifacts:
-    paths:
-      - build/bin
+  # artifacts:
+  #   paths:
+  #     - build/bin
   # depending on your build setup it's most likely a good idea to cache outputs to reduce the build time
   # cache:
   #   paths:
   #     - "*.o"
 
-# run tests using the binary built before
-test:
-  stage: test
+cpp-test:
+  stage: cpp-test
+  image: rduweston/ubuntu-ci:18.04
+  before_script:
+    - apt update && apt -y install libasio-dev
   script:
+    - mkdir build && cd build
+    - cmake -DBUILD_TESTS=ON ..
+    - cmake --build .
     - ./build/bin/gtest_all
-  dependencies:
-    - build
+  # dependencies:
+  #   - cpp-build