CI: Replace minimal-ubuntu job with ubuntu

The case of testing that pystencils does not depend on any optional dependencies is still fulfilled by the minimal_conda image.

Depends on https://i10git.cs.fau.de/pycodegen/pycodegen/merge_requests/9. Fixes #19 (closed).

.gitlab-ci.yml

@@ -70,9 +70,12 @@ minimal-ubuntu:
   except:
     variables:
       - $ENABLE_NIGHTLY_BUILDS
-  image: i10git.cs.fau.de:5005/pycodegen/pycodegen/minimal_ubuntu
+  image: i10git.cs.fau.de:5005/pycodegen/pycodegen/ubuntu
   script:
-    - python3 setup.py quicktest
+    - export NUM_CORES=$(nproc --all)
+    - mkdir -p ~/.config/matplotlib
+    - echo "backend:template" > ~/.config/matplotlib/matplotlibrc
+    - py.test -v -n $NUM_CORES -m "not longrun"
   tags:
     - docker