Fix installing dependencies

.gitlab-ci.yml

@@ -6,7 +6,7 @@ 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 build-essential cmake libboost-thread
+    - sudo apt update && sudo apt -y --no-install-recommends install build-essential cmake libboost-thread-dev
   script:
     - make
   artifacts: