Test against 2.8 modules

.gitlab-ci.yml

@@ -2,19 +2,14 @@
 # Install external dependencies
 before_script:
   - patch -d /duneci/modules/dune-common -p1 < dune-common-densematrix-adolc-workaround.diff
-  - duneci-install-module https://git.imp.fu-berlin.de/agnumpde/dune-matrix-vector.git
-  - duneci-install-module https://git.imp.fu-berlin.de/agnumpde/dune-fufem.git
-  - duneci-install-module https://git.imp.fu-berlin.de/agnumpde/dune-solvers.git
+  - duneci-install-module -b releases/2.8 https://git.imp.fu-berlin.de/agnumpde/dune-matrix-vector.git
+  - duneci-install-module -b releases/2.8 https://git.imp.fu-berlin.de/agnumpde/dune-fufem.git
+  - duneci-install-module -b releases/2.8 https://git.imp.fu-berlin.de/agnumpde/dune-solvers.git
 
-dune:2.7 gcc:
-  image: registry.dune-project.org/docker/ci/dune:2.7-debian-10-gcc-8-17
-  before_script:
-  script: duneci-standard-test
-
-dune:git  clang  C++17:
+dune:2.8  clang  C++17:
   image: registry.dune-project.org/docker/ci/dune:git-debian-10-clang-7-libcpp-17
   script: duneci-standard-test
 
-dune:git  gcc-8  C++17:
+dune:2.8  gcc-8  C++17:
   image: registry.dune-project.org/docker/ci/dune:git-debian-10-gcc-8-17
   script: duneci-standard-test