try to cache everything

.gitlab-ci.yml

@@ -13,8 +13,7 @@ Debian:
   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 libboost-iostreams-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
+    - apt-get -o dir::cache::archives="$APT_CACHE_DIR" install -y cmake libboost-filesystem-dev libboost-program-options-dev libboost-system-dev libboost-iostreams-dev libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libswresample-dev libsdl2-dev libqt4-dev libopenal-dev libopenscenegraph-3.4-dev libunshield-dev libtinyxml-dev libmygui-dev libbullet-dev
   stage: build
   script: 
     - cores_to_use=$((`nproc`-2)); if (( $cores_to_use < 1 )); then cores_to_use=1; fi