New gitlab CI, build for ubuntu using ubuntu image with geant4 built-in

.gitlab-ci.yml

 stages:
-  - deps-A
-  - deps-B
-  - deps-C
-  - deps-D
+  - deps-geomodelcore
+  - deps-CLHEP
+  - deps-geomodelio
+  - deps-xerces-c
+  - deps-Geant4
   - build
 
 
@@ -21,15 +22,12 @@ variables:
     - export PATH="/usr/local/opt/qt/bin:$PATH" # to make Qt5 discoverable by CMake
 
 .ubuntu-template-job: &ubuntu-job
-  image: ubuntu:18.04
+  image: gitlab-registry.cern.ch/mbandier/geant4-ubuntu/base-image:latest
   tags:
     - docker
-  before_script:
-  - apt-get update -qq && apt-get install -y -qq git cmake wget unzip build-essential freeglut3-dev libboost-all-dev qt5-default mercurial libeigen3-dev
-
 
 .geomodelcore-build-template-job: &geomodelcore-job
-  stage: deps-A
+  stage: deps-geomodelcore
   variables:
     CMAKE_ARGS: ${CMAKE_BASE_ARGS}
   script:
@@ -45,7 +43,7 @@ variables:
       - install
 
 .CLHEP-build-template-job: &CLHEP-job
-  stage: deps-B
+  stage: deps-CLHEP
   variables:
     CMAKE_ARGS: ${CMAKE_BASE_ARGS}
   script:
@@ -64,7 +62,7 @@ variables:
       - install
 
 .geomodelio-build-template-job: &geomodelio-job
-  stage: deps-C
+  stage: deps-geomodelio
   variables:
     CMAKE_ARGS: ${CMAKE_BASE_ARGS}
   script:
@@ -78,9 +76,28 @@ variables:
   artifacts:
     paths:
       - install
+    
+
+.xerces-c-build-template-job: &xerces-c-job
+  stage: deps-xerces-c
+  variables:
+    CMAKE_ARGS: ${CMAKE_BASE_ARGS}
+  script:
+    - pwd; ls
+    - wget https://archive.apache.org/dist/xerces/c/3/sources/xerces-c-3.2.2.tar.gz
+    - tar -xf xerces-c-3.2.2.tar.gz
+    - mkdir xerces-c-build
+    - cd xerces-c-build
+    - cmake ${CMAKE_ARGS} ../xerces-c-3.2.2
+    - make -j32
+    - make install
+  artifacts:
+    paths:
+      - install
+
 
 .Geant4-build-template-job: &Geant4-job
-  stage: deps-D
+  stage: deps-Geant4
   variables:
     CMAKE_ARGS: ${CMAKE_BASE_ARGS}
   script:
@@ -91,7 +108,7 @@ variables:
     - cd ../
     - mkdir Geant4-build
     - cd Geant4-build
-    - cmake ${CMAKE_ARGS} ../geant4
+    - cmake ${CMAKE_ARGS} -DGEANT4_INSTALL_DATA=ON -DGEANT4_USE_GDML=ON -DGEANT4_BUILD_MULTITHREADED=ON -DXERCESC_ROOT_DIR=../install/xerces-c/ ../geant4
     - make -j32
     - make install
   artifacts:
@@ -103,13 +120,16 @@ variables:
   variables:
     CMAKE_ARGS: ${CMAKE_BASE_ARGS}
   script:
-    - echo "PWD; LS"
     - pwd; ls
-    - mkdir build
-    - cd build
-    - cmake ${CMAKE_ARGS} ..
-    - cmake --build . -- -j32
-    - cmake --build . -- install
+    - git clone https://gitlab.cern.ch/GeoModelDev/GeoModelG4.git
+    - mkdir GeoModelG4-build
+    - cd GeoModelG4-build
+    - cmake ${CMAKE_ARGS} ../GeoModelG4
+    - make -j32
+    - make install
+  artifacts:
+    paths:
+      - install
 
 # ACTUAL JOBS
 
@@ -127,10 +147,14 @@ geomodelio-mac:
   <<: *geomodelio-job
   needs: ["geomodelcore-mac", "CLHEP-mac"]
 
+xerces-c-mac:
+  <<: *macos-job
+  <<: *xerces-c-job
+
 Geant4-mac:
   <<: *macos-job
   <<: *Geant4-job
-  needs: ["CLHEP-mac"]
+  needs: ["CLHEP-mac", "xerces-c-mac"]
 
 geomodelg4-mac:
   <<: *macos-job
@@ -143,21 +167,25 @@ geomodelcore-ubuntu:
   <<: *ubuntu-job
   <<: *geomodelcore-job
 
-CLHEP-ubuntu:
-  <<: *ubuntu-job
-  <<: *CLHEP-job
+#CLHEP-ubuntu:
+#  <<: *ubuntu-job
+#  <<: *CLHEP-job
 
 geomodelio-ubuntu:
   <<: *ubuntu-job
   <<: *geomodelio-job
-  needs: ["geomodelcore-ubuntu", "CLHEP-ubuntu"]
+  needs: ["geomodelcore-ubuntu"]
 
-Geant4-ubuntu:
-  <<: *ubuntu-job
-  <<: *Geant4-job
-  needs: ["CLHEP-ubuntu"]
+# xerces-c-ubuntu:
+#   <<: *ubuntu-job
+#   <<: *xerces-c-job
+
+# Geant4-ubuntu:
+#   <<: *ubuntu-job
+#   <<: *Geant4-job
+#   needs: ["CLHEP-ubuntu", "xerces-c-ubuntu"]
 
 geomodelg4-ubuntu:
   <<: *ubuntu-job
   <<: *geomodelg4-job
-  needs: ["geomodelcore-ubuntu", "geomodelio-ubuntu", "CLHEP-ubuntu", "Geant4-ubuntu"]
+  needs: ["geomodelcore-ubuntu", "geomodelio-ubuntu"]