reverted image change back to gcc

reverted image change back to gcc

.gitlab-ci.yml

@@ -8,14 +8,14 @@
 # can use verions as well, like gcc:5.2
 # see https://hub.docker.com/_/gcc/
 
-image: zouzias/boost
+image: gcc
 
 build:
   stage: build
   # instead of calling g++ directly you can also use some build toolkit like make
   # install the necessary build tools when needed
   before_script:
-     - apt update && apt -y install make autoconf cmake
+     - apt update && apt -y install make autoconf cmake libboost-dev libboost-all-dev
   script:
     - mkdir build
     - cd build