Merge branch 'ci/dumux-docker-ci-branch-names' into 'master'

Add dumux-docker-ci branch name to image names

See merge request !230

.gitlab-ci.yml

@@ -4,6 +4,7 @@ stages:
   - solution checker
 
 variables:
+  DUMUX_DOCKER_CI_BRANCH: master
   IMAGE_REGISTRY_URL: $CI_REGISTRY/dumux-repositories/dumux-docker-ci
   DUMUX_CI_DUNE_LATEST_RELEASE: "2.9"
   REVEAL_THEME: "serif"
@@ -33,7 +34,7 @@ variables:
 full-dune-latest-release-gcc:
   extends: .default-trigger
   variables:
-    IMAGE: $IMAGE_REGISTRY_URL/full:dune-$DUMUX_CI_DUNE_LATEST_RELEASE-gcc-ubuntu-22.04
+    IMAGE: $IMAGE_REGISTRY_URL/${DUMUX_DOCKER_CI_BRANCH}_full:dune-$DUMUX_CI_DUNE_LATEST_RELEASE-gcc-ubuntu-22.04
 
 pages:
   image: alpine:latest
@@ -64,6 +65,6 @@ pages:
 
 apply_patches:
   stage: solution checker
-  image: $IMAGE_REGISTRY_URL/full:dune-$DUMUX_CI_DUNE_LATEST_RELEASE-gcc-ubuntu-22.04
+  image: $IMAGE_REGISTRY_URL/${DUMUX_DOCKER_CI_BRANCH}_full:dune-$DUMUX_CI_DUNE_LATEST_RELEASE-gcc-ubuntu-22.04
   script:
     - sh .patches/apply_patches.sh