attempt to fix building process on gitlab #4

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: rikorose/gcc-cmake:gcc-8
+image: docker pull nvidia/opengl:1.0-glvnd-devel
 
 stages:
   - build
@@ -7,5 +7,4 @@ build:
   stage: build
   script:
     - gcc --version
-    - sudo apt update && sudo apt install -y freeglut3 freeglut3-dev libglew1.5 libglew1.5-dev libglu1-mesa libglu1-mesa-dev libgl1-mesa-glx libgl1-mesa-dev
     - mkdir -p build && cd build && cmake -DCMAKE_BUILD_TYPE=Release .. && make -j